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|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1996-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifndef __PROCESS_H__
#define __PROCESS_H__
#include "sys.h"
#undef ERTS_INCLUDE_SCHEDULER_INTERNALS
#if (defined(ERL_PROCESS_C__) \
|| defined(ERL_PORT_TASK_C__) \
|| (ERTS_GLB_INLINE_INCL_FUNC_DEF \
&& defined(ERTS_DO_INCL_GLB_INLINE_FUNC_DEF)))
#define ERTS_INCLUDE_SCHEDULER_INTERNALS
#endif
/* #define ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC */
#if !defined(ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC) && defined(DEBUG)
# define ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
#endif
typedef struct process Process;
#define ERTS_PROCESS_LOCK_ONLY_PROC_LOCK_TYPE__
#include "erl_process_lock.h" /* Only pull out important types... */
#undef ERTS_PROCESS_LOCK_ONLY_PROC_LOCK_TYPE__
#define ERL_PORT_GET_PORT_TYPE_ONLY__
#include "erl_port.h"
#undef ERL_PORT_GET_PORT_TYPE_ONLY__
#include "erl_vm.h"
#include "erl_message.h"
#include "erl_process_dict.h"
#include "erl_node_container_utils.h"
#include "erl_node_tables.h"
#include "erl_monitor_link.h"
#include "erl_hl_timer.h"
#include "erl_time.h"
#include "erl_atom_table.h"
#include "external.h"
#include "erl_mseg.h"
#include "erl_async.h"
#include "erl_gc.h"
#define ERTS_ONLY_INCLUDE_TRACE_FLAGS
#include "erl_trace.h"
#undef ERTS_ONLY_INCLUDE_TRACE_FLAGS
#define ERTS_ONLY_SCHED_SPEC_ETS_DATA
#include "erl_db.h"
#undef ERTS_ONLY_SCHED_SPEC_ETS_DATA
#ifdef HIPE
#include "hipe_process.h"
#endif
#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY
#define ERL_THR_PROGRESS_TSD_TYPE_ONLY
#include "erl_thr_progress.h"
#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT 0
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT 0
#define ERTS_MAX_NO_OF_SCHEDULERS 1024
#define ERTS_MAX_NO_OF_DIRTY_CPU_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS
#define ERTS_MAX_NO_OF_DIRTY_IO_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS
#define ERTS_DEFAULT_MAX_PROCESSES (1 << 18)
#define ERTS_HEAP_ALLOC(Type, Size) \
erts_alloc((Type), (Size))
#define ERTS_HEAP_REALLOC(Type, Ptr, OldSize, NewSize) \
erts_realloc((Type), (Ptr), (NewSize))
#define ERTS_HEAP_FREE(Type, Ptr, Size) \
erts_free((Type), (Ptr))
#include "export.h"
struct saved_calls {
int len;
int n;
int cur;
Export *ct[1];
};
extern Export exp_send, exp_receive, exp_timeout;
extern int ERTS_WRITE_UNLIKELY(erts_sched_compact_load);
extern int ERTS_WRITE_UNLIKELY(erts_sched_balance_util);
extern Uint ERTS_WRITE_UNLIKELY(erts_no_schedulers);
extern Uint ERTS_WRITE_UNLIKELY(erts_no_total_schedulers);
extern Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_cpu_schedulers);
extern Uint ERTS_WRITE_UNLIKELY(erts_no_dirty_io_schedulers);
extern Uint ERTS_WRITE_UNLIKELY(erts_no_run_queues);
extern int erts_sched_thread_suggested_stack_size;
extern int erts_dcpu_sched_thread_suggested_stack_size;
extern int erts_dio_sched_thread_suggested_stack_size;
#define ERTS_SCHED_THREAD_MIN_STACK_SIZE 20 /* Kilo words */
#define ERTS_SCHED_THREAD_MAX_STACK_SIZE 8192 /* Kilo words */
#include "erl_bits.h"
/* process priorities */
#define PRIORITY_MAX 0
#define PRIORITY_HIGH 1
#define PRIORITY_NORMAL 2
#define PRIORITY_LOW 3
#define ERTS_NO_PROC_PRIO_LEVELS 4
#define ERTS_NO_PROC_PRIO_QUEUES 3
#define ERTS_PORT_PRIO_LEVEL ERTS_NO_PROC_PRIO_LEVELS
#define ERTS_NO_PRIO_LEVELS (ERTS_NO_PROC_PRIO_LEVELS + 1)
#define ERTS_RUNQ_FLGS_PROCS_QMASK \
((((Uint32) 1) << ERTS_NO_PROC_PRIO_LEVELS) - 1)
#define ERTS_RUNQ_FLGS_QMASK \
((((Uint32) 1) << ERTS_NO_PRIO_LEVELS) - 1)
#define ERTS_RUNQ_FLGS_EMIGRATE_SHFT \
ERTS_NO_PRIO_LEVELS
#define ERTS_RUNQ_FLGS_IMMIGRATE_SHFT \
(ERTS_RUNQ_FLGS_EMIGRATE_SHFT + ERTS_NO_PRIO_LEVELS)
#define ERTS_RUNQ_FLGS_EVACUATE_SHFT \
(ERTS_RUNQ_FLGS_IMMIGRATE_SHFT + ERTS_NO_PRIO_LEVELS)
#define ERTS_RUNQ_FLGS_EMIGRATE_QMASK \
(ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_EMIGRATE_SHFT)
#define ERTS_RUNQ_FLGS_IMMIGRATE_QMASK \
(ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_IMMIGRATE_SHFT)
#define ERTS_RUNQ_FLGS_EVACUATE_QMASK \
(ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_EVACUATE_SHFT)
#define ERTS_RUNQ_FLG_BASE2 \
(ERTS_RUNQ_FLGS_EVACUATE_SHFT + ERTS_NO_PRIO_LEVELS)
#define ERTS_RUNQ_FLG_OUT_OF_WORK \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 0))
#define ERTS_RUNQ_FLG_HALFTIME_OUT_OF_WORK \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 1))
#define ERTS_RUNQ_FLG_SUSPENDED \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 2))
#define ERTS_RUNQ_FLG_CHK_CPU_BIND \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 3))
#define ERTS_RUNQ_FLG_INACTIVE \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 4))
#define ERTS_RUNQ_FLG_NONEMPTY \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 5))
#define ERTS_RUNQ_FLG_PROTECTED \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 6))
#define ERTS_RUNQ_FLG_EXEC \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 7))
#define ERTS_RUNQ_FLG_MSB_EXEC \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 8))
#define ERTS_RUNQ_FLG_MISC_OP \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 9))
#define ERTS_RUNQ_FLG_HALTING \
(((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 10))
#define ERTS_RUNQ_FLG_MAX (ERTS_RUNQ_FLG_BASE2 + 12)
#define ERTS_RUNQ_FLGS_MIGRATION_QMASKS \
(ERTS_RUNQ_FLGS_EMIGRATE_QMASK \
| ERTS_RUNQ_FLGS_IMMIGRATE_QMASK \
| ERTS_RUNQ_FLGS_EVACUATE_QMASK)
#define ERTS_RUNQ_FLGS_MIGRATION_INFO \
(ERTS_RUNQ_FLG_INACTIVE \
| ERTS_RUNQ_FLG_OUT_OF_WORK \
| ERTS_RUNQ_FLG_HALFTIME_OUT_OF_WORK)
#define ERTS_RUNQ_FLG_EMIGRATE(PRIO) \
(((Uint32) 1) << (ERTS_RUNQ_FLGS_EMIGRATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
((FLGS) & ERTS_RUNQ_FLG_EMIGRATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
((FLGS) |= ERTS_RUNQ_FLG_EMIGRATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
((FLGS) &= ~ERTS_RUNQ_FLG_EMIGRATE((PRIO)))
#define ERTS_RUNQ_FLG_IMMIGRATE(PRIO) \
(((Uint32) 1) << (ERTS_RUNQ_FLGS_IMMIGRATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
((FLGS) & ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
((FLGS) |= ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
((FLGS) &= ~ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))
#define ERTS_RUNQ_FLG_EVACUATE(PRIO) \
(((Uint32) 1) << (ERTS_RUNQ_FLGS_EVACUATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
((FLGS) & ERTS_RUNQ_FLG_EVACUATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
((FLGS) |= ERTS_RUNQ_FLG_EVACUATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
((FLGS) &= ~ERTS_RUNQ_FLG_EVACUATE((PRIO)))
#define ERTS_RUNQ_FLGS_INIT(RQ, INIT) \
erts_atomic32_init_nob(&(RQ)->flags, (erts_aint32_t) (INIT))
#define ERTS_RUNQ_FLGS_SET(RQ, FLGS) \
((Uint32) erts_atomic32_read_bor_relb(&(RQ)->flags, \
(erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_SET_NOB(RQ, FLGS) \
((Uint32) erts_atomic32_read_bor_nob(&(RQ)->flags, \
(erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_BSET(RQ, MSK, FLGS) \
((Uint32) erts_atomic32_read_bset_relb(&(RQ)->flags, \
(erts_aint32_t) (MSK), \
(erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_UNSET(RQ, FLGS) \
((Uint32) erts_atomic32_read_band_relb(&(RQ)->flags, \
(erts_aint32_t) ~(FLGS)))
#define ERTS_RUNQ_FLGS_UNSET_NOB(RQ, FLGS) \
((Uint32) erts_atomic32_read_band_nob(&(RQ)->flags, \
(erts_aint32_t) ~(FLGS)))
#define ERTS_RUNQ_FLGS_GET(RQ) \
((Uint32) erts_atomic32_read_acqb(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_GET_NOB(RQ) \
((Uint32) erts_atomic32_read_nob(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_GET_MB(RQ) \
((Uint32) erts_atomic32_read_mb(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_READ_BSET(RQ, MSK, FLGS) \
((Uint32) erts_atomic32_read_bset_relb(&(RQ)->flags, \
(erts_aint32_t) (MSK), \
(erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_POINTER_MASK (~((erts_aint_t) 3))
#define ERTS_RUNQ_BOUND_FLAG ((erts_aint_t) 1)
typedef enum {
ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED,
ERTS_SCHDLR_SSPND_DONE_NMSCHED_BLOCKED,
ERTS_SCHDLR_SSPND_YIELD_DONE_MSCHED_BLOCKED,
ERTS_SCHDLR_SSPND_YIELD_DONE_NMSCHED_BLOCKED,
ERTS_SCHDLR_SSPND_DONE,
ERTS_SCHDLR_SSPND_YIELD_RESTART,
ERTS_SCHDLR_SSPND_YIELD_DONE,
ERTS_SCHDLR_SSPND_EINVAL
} ErtsSchedSuspendResult;
typedef enum {
ERTS_MIGRATE_SUCCESS,
ERTS_MIGRATE_FAILED_NOT_IN_RUNQ,
ERTS_MIGRATE_FAILED_RUNQ_CHANGED,
ERTS_MIGRATE_FAILED_RUNQ_SUSPENDED
} ErtsMigrateResult;
#define ERTS_SSI_FLG_SLEEPING (((erts_aint32_t) 1) << 0)
#define ERTS_SSI_FLG_POLL_SLEEPING (((erts_aint32_t) 1) << 1)
#define ERTS_SSI_FLG_TSE_SLEEPING (((erts_aint32_t) 1) << 2)
#define ERTS_SSI_FLG_WAITING (((erts_aint32_t) 1) << 3)
#define ERTS_SSI_FLG_SUSPENDED (((erts_aint32_t) 1) << 4)
#define ERTS_SSI_FLG_MSB_EXEC (((erts_aint32_t) 1) << 5)
#define ERTS_SSI_FLGS_MAX 6
#define ERTS_SSI_FLGS_SLEEP_TYPE \
(ERTS_SSI_FLG_TSE_SLEEPING|ERTS_SSI_FLG_POLL_SLEEPING)
#define ERTS_SSI_FLGS_SLEEP \
(ERTS_SSI_FLG_SLEEPING|ERTS_SSI_FLGS_SLEEP_TYPE)
#define ERTS_SSI_FLGS_ALL \
(ERTS_SSI_FLGS_SLEEP \
| ERTS_SSI_FLG_WAITING \
| ERTS_SSI_FLG_SUSPENDED \
| ERTS_SSI_FLG_MSB_EXEC)
/*
* Keep ERTS_SSI_AUX_WORK flags ordered in expected frequency
* order relative eachother. Most frequent at lowest at lowest
* index.
*
* ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX *need* to be
* highest index...
*
* Remember to update description in erts_pre_init_process()
* and etp-commands when adding new flags...
*/
typedef enum {
ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP_IX,
ERTS_SSI_AUX_WORK_DD_IX,
ERTS_SSI_AUX_WORK_DD_THR_PRGR_IX,
ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC_IX,
ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM_IX,
ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP_IX,
ERTS_SSI_AUX_WORK_CNCLD_TMRS_IX,
ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR_IX,
ERTS_SSI_AUX_WORK_ASYNC_READY_IX,
ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX,
ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX,
ERTS_SSI_AUX_WORK_MISC_IX,
ERTS_SSI_AUX_WORK_SET_TMO_IX,
ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX,
ERTS_SSI_AUX_WORK_YIELD_IX,
ERTS_SSI_AUX_WORK_REAP_PORTS_IX,
ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX, /* SHOULD be last flag index */
ERTS_SSI_AUX_WORK_NO_FLAGS /* Not a flag index... */
} ErtsSsiAuxWorkFlagIndex;
#define ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP_IX)
#define ERTS_SSI_AUX_WORK_DD \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DD_IX)
#define ERTS_SSI_AUX_WORK_DD_THR_PRGR \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DD_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC_IX)
#define ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM_IX)
#define ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP_IX)
#define ERTS_SSI_AUX_WORK_CNCLD_TMRS \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_CNCLD_TMRS_IX)
#define ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_ASYNC_READY \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_ASYNC_READY_IX)
#define ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX)
#define ERTS_SSI_AUX_WORK_MISC_THR_PRGR \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_MISC \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_IX)
#define ERTS_SSI_AUX_WORK_SET_TMO \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_SET_TMO_IX)
#define ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX)
#define ERTS_SSI_AUX_WORK_YIELD \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_YIELD_IX)
#define ERTS_SSI_AUX_WORK_REAP_PORTS \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_REAP_PORTS_IX)
#define ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED \
(((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX)
typedef struct ErtsSchedulerSleepInfo_ ErtsSchedulerSleepInfo;
typedef struct {
erts_spinlock_t lock;
ErtsSchedulerSleepInfo *list; /* circular lifo list; points to last out */
} ErtsSchedulerSleepList;
struct ErtsSchedulerSleepInfo_ {
struct ErtsSchedulerData_ *esdp;
ErtsSchedulerSleepInfo *next;
ErtsSchedulerSleepInfo *prev;
erts_atomic32_t flags;
erts_tse_t *event;
struct erts_poll_thread *psi;
erts_atomic32_t aux_work;
};
/* times to reschedule low prio process before running */
#define RESCHEDULE_LOW 8
#define ERTS_MAX_MISC_OPS 5
#define ERTS_FULL_REDS_HISTORY_AVG_SHFT 3
#define ERTS_FULL_REDS_HISTORY_SIZE \
((1 << ERTS_FULL_REDS_HISTORY_AVG_SHFT) - 1)
typedef struct ErtsProcList_ ErtsProcList;
struct ErtsProcList_ {
union {
Eterm pid;
Process *p;
} u;
Uint64 started_interval;
ErtsProcList* next;
ErtsProcList* prev;
};
typedef struct ErtsMiscOpList_ ErtsMiscOpList;
struct ErtsMiscOpList_ {
ErtsMiscOpList *next;
void (*func)(void *arg);
void *arg;
};
typedef struct {
Process* first;
Process* last;
} ErtsRunPrioQueue;
typedef enum {
ERTS_SCHED_NORMAL = 0,
ERTS_SCHED_DIRTY_CPU = 1,
ERTS_SCHED_DIRTY_IO = 2,
ERTS_SCHED_TYPE_FIRST = ERTS_SCHED_NORMAL,
ERTS_SCHED_TYPE_LAST = ERTS_SCHED_DIRTY_IO
} ErtsSchedType;
typedef struct ErtsSchedulerData_ ErtsSchedulerData;
typedef struct ErtsRunQueue_ ErtsRunQueue;
typedef struct {
erts_atomic32_t len;
erts_aint32_t max_len;
int reds;
} ErtsRunQueueInfo;
#ifdef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
# undef ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
# define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT 1
#endif
#undef ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
typedef erts_atomic64_t ErtsAtomicSchedTime;
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
typedef struct {
ErtsAtomicSchedTime last;
struct {
Uint64 short_interval;
Uint64 long_interval;
} worktime;
int is_working;
} ErtsRunQueueSchedUtil;
#endif
typedef struct {
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
int sched_util;
#endif
Uint32 flags;
ErtsRunQueue *misc_evac_runq;
struct {
struct {
int this;
int other;
} limit;
ErtsRunQueue *runq;
Uint32 flags;
} prio[ERTS_NO_PRIO_LEVELS];
} ErtsMigrationPath;
typedef struct ErtsMigrationPaths_ ErtsMigrationPaths;
struct ErtsMigrationPaths_ {
void *block;
ErtsMigrationPaths *next;
ErtsThrPrgrVal thr_prgr;
ErtsMigrationPath mpath[1];
};
struct ErtsRunQueue_ {
int ix;
erts_mtx_t mtx;
erts_cnd_t cnd;
ErtsSchedulerSleepList sleepers;
ErtsSchedulerData *scheduler;
int waiting; /* < 0 in sys schedule; > 0 on cnd variable */
int woken;
erts_atomic32_t flags;
int check_balance_reds;
int full_reds_history_sum;
int full_reds_history[ERTS_FULL_REDS_HISTORY_SIZE];
int out_of_work_count;
erts_aint32_t max_len;
erts_atomic32_t len;
int wakeup_other;
int wakeup_other_reds;
struct {
Uint context_switches;
Uint reductions;
ErtsRunQueueInfo prio_info[ERTS_NO_PROC_PRIO_LEVELS];
/* We use the same prio queue for low and
normal prio processes */
ErtsRunPrioQueue prio[ERTS_NO_PROC_PRIO_LEVELS-1];
} procs;
struct {
ErtsMiscOpList *start;
ErtsMiscOpList *end;
erts_atomic_t evac_runq;
} misc;
struct {
ErtsRunQueueInfo info;
Port *start;
Port *end;
} ports;
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
ErtsRunQueueSchedUtil sched_util;
#endif
};
extern long erts_runq_supervision_interval;
typedef union {
ErtsRunQueue runq;
char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsRunQueue))];
} ErtsAlignedRunQueue;
extern ErtsAlignedRunQueue * ERTS_WRITE_UNLIKELY(erts_aligned_run_queues);
#define ERTS_PROC_REDUCTIONS_EXECUTED(SD, RQ, PRIO, REDS, AREDS)\
do { \
(RQ)->procs.reductions += (AREDS); \
(RQ)->procs.prio_info[(PRIO)].reds += (REDS); \
(RQ)->check_balance_reds -= (REDS); \
(RQ)->wakeup_other_reds += (AREDS); \
(SD)->check_time_reds += (AREDS); \
} while (0)
#define ERTS_PORT_REDUCTIONS_EXECUTED(SD, RQ, REDS) \
do { \
(RQ)->ports.info.reds += (REDS); \
(RQ)->check_balance_reds -= (REDS); \
(RQ)->wakeup_other_reds += (REDS); \
(SD)->check_time_reds += (REDS); \
} while (0)
typedef struct {
union {
erts_atomic32_t mod; /* on dirty schedulers */
int need; /* "+sbu true" or scheduler_wall_time enabled */
} u;
int enabled;
Uint64 start;
struct {
Uint64 total;
Uint64 start;
} working;
} ErtsSchedWallTime;
typedef struct {
int sched;
erts_aint32_t aux_work;
} ErtsDelayedAuxWorkWakeupJob;
typedef struct {
int sched_id;
ErtsSchedulerData *esdp;
ErtsSchedulerSleepInfo *ssi;
ErtsThrPrgrVal current_thr_prgr;
ErtsThrPrgrVal latest_wakeup;
struct {
int ix;
ErtsThrPrgrVal thr_prgr;
} misc;
struct {
ErtsThrPrgrVal thr_prgr;
} dd;
struct {
ErtsThrPrgrVal thr_prgr;
} cncld_tmrs;
struct {
ErtsThrPrgrVal thr_prgr;
UWord size;
ErtsThrPrgrLaterOp *first;
ErtsThrPrgrLaterOp *last;
} later_op;
struct {
int need_thr_prgr;
ErtsThrPrgrVal thr_prgr;
void *queue;
} async_ready;
struct {
Uint64 next;
int *sched2jix;
int jix;
ErtsDelayedAuxWorkWakeupJob *job;
} delayed_wakeup;
struct {
ErtsAlcuBlockscanYieldData alcu_blockscan;
ErtsEtsAllYieldData ets_all;
/* Other yielding operations... */
} yield;
struct {
struct {
erts_aint32_t flags;
void (*callback)(void *);
void *arg;
} wait_completed;
} debug;
} ErtsAuxWorkData;
#define ERTS_SCHED_AUX_YIELD_DATA(ESDP, NAME) \
(&(ESDP)->aux_work_data.yield.NAME)
void erts_notify_new_aux_yield_work(ErtsSchedulerData *esdp);
typedef enum {
ERTS_DIRTY_CPU_SCHEDULER,
ERTS_DIRTY_IO_SCHEDULER
} ErtsDirtySchedulerType;
struct ErtsSchedulerData_ {
/*
* Keep X registers first (so we get as many low
* numbered registers as possible in the same cache
* line).
*/
Eterm* x_reg_array; /* X registers */
FloatDef* f_reg_array; /* Floating point registers. */
ErtsTimerWheel *timer_wheel;
ErtsNextTimeoutRef next_tmo_ref;
ErtsHLTimerService *timer_service;
ethr_tid tid; /* Thread id */
struct erl_bits_state erl_bits_state; /* erl_bits.c state */
void *match_pseudo_process; /* erl_db_util.c:db_prog_match() */
Process *free_process;
ErtsThrPrgrData thr_progress_data;
ErtsSchedulerSleepInfo *ssi;
Process *current_process;
ErtsSchedType type;
Uint no; /* Scheduler number for normal schedulers */
Uint dirty_no; /* Scheduler number for dirty schedulers */
struct enif_environment_t *current_nif;
Process *dirty_shadow_process;
Port *current_port;
ErtsRunQueue *run_queue;
int virtual_reds;
int cpu_id; /* >= 0 when bound */
ErtsAuxWorkData aux_work_data;
ErtsAtomCacheMap atom_cache_map;
ErtsMonotonicTime last_monotonic_time;
int check_time_reds;
Uint32 thr_id;
Uint64 unique;
Uint64 ref;
ErtsSchedAllocData alloc_data;
struct {
Uint64 out;
Uint64 in;
} io;
struct {
ErtsSignal* sig;
Eterm to;
#ifdef DEBUG
Process* dbg_from;
#endif
} pending_signal;
Uint64 reductions;
ErtsSchedWallTime sched_wall_time;
ErtsGCInfo gc_info;
ErtsPortTaskHandle nosuspend_port_task_handle;
ErtsEtsTables ets_tables;
#ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
erts_alloc_verify_func_t verify_unused_temp_alloc;
Allctr_t *verify_unused_temp_alloc_data;
#endif
};
typedef union {
ErtsSchedulerData esd;
char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsSchedulerData))];
} ErtsAlignedSchedulerData;
extern ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_scheduler_data);
extern ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_dirty_cpu_scheduler_data);
extern ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_dirty_io_scheduler_data);
#if defined(ERTS_ENABLE_LOCK_CHECK)
int erts_lc_runq_is_locked(ErtsRunQueue *);
#endif
void
erts_debug_later_op_foreach(void (*callback)(void*),
void (*func)(void *, ErtsThrPrgrVal, void *),
void *arg);
#ifdef ERTS_INCLUDE_SCHEDULER_INTERNALS
void erts_empty_runq(ErtsRunQueue *rq);
void erts_non_empty_runq(ErtsRunQueue *rq);
/*
* Run queue locked during modifications. We use atomic ops since
* other threads peek at values without run queue lock.
*/
ERTS_GLB_INLINE void erts_inc_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio);
ERTS_GLB_INLINE void erts_dec_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio);
ERTS_GLB_INLINE void erts_reset_max_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void
erts_inc_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio)
{
erts_aint32_t len;
ERTS_LC_ASSERT(erts_lc_runq_is_locked(rq));
len = erts_atomic32_read_dirty(&rq->len);
if (len == 0)
erts_non_empty_runq(rq);
len++;
if (rq->max_len < len)
rq->max_len = len;
ASSERT(len > 0);
erts_atomic32_set_nob(&rq->len, len);
len = erts_atomic32_read_dirty(&rqi->len);
ASSERT(len >= 0);
if (len == 0) {
ASSERT((erts_atomic32_read_nob(&rq->flags)
& ((erts_aint32_t) (1 << prio))) == 0);
erts_atomic32_read_bor_nob(&rq->flags,
(erts_aint32_t) (1 << prio));
}
len++;
if (rqi->max_len < len)
rqi->max_len = len;
erts_atomic32_set_relb(&rqi->len, len);
}
ERTS_GLB_INLINE void
erts_dec_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio)
{
erts_aint32_t len;
ERTS_LC_ASSERT(erts_lc_runq_is_locked(rq));
len = erts_atomic32_read_dirty(&rq->len);
len--;
ASSERT(len >= 0);
erts_atomic32_set_nob(&rq->len, len);
len = erts_atomic32_read_dirty(&rqi->len);
len--;
ASSERT(len >= 0);
if (len == 0) {
ASSERT((erts_atomic32_read_nob(&rq->flags)
& ((erts_aint32_t) (1 << prio))));
erts_atomic32_read_band_nob(&rq->flags,
~((erts_aint32_t) (1 << prio)));
}
erts_atomic32_set_relb(&rqi->len, len);
}
ERTS_GLB_INLINE void
erts_reset_max_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi)
{
erts_aint32_t len;
ERTS_LC_ASSERT(erts_lc_runq_is_locked(rq));
len = erts_atomic32_read_dirty(&rqi->len);
ASSERT(rqi->max_len >= len);
rqi->max_len = len;
}
#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
#define RUNQ_READ_LEN(X) erts_atomic32_read_nob((X))
#endif /* ERTS_INCLUDE_SCHEDULER_INTERNALS */
/*
* Process Specific Data.
*
* NOTE: Only use PSD for very rarely used data.
*/
#define ERTS_PSD_ERROR_HANDLER 0
#define ERTS_PSD_SAVED_CALLS_BUF 1
#define ERTS_PSD_SCHED_ID 2
#define ERTS_PSD_CALL_TIME_BP 3
#define ERTS_PSD_DELAYED_GC_TASK_QS 4
#define ERTS_PSD_NIF_TRAP_EXPORT 5
#define ERTS_PSD_ETS_OWNED_TABLES 6
#define ERTS_PSD_ETS_FIXED_TABLES 7
#define ERTS_PSD_DIST_ENTRY 8
#define ERTS_PSD_PENDING_SUSPEND 9
#define ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF 10 /* keep last... */
#define ERTS_PSD_SIZE 11
#if !defined(HIPE)
# undef ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF
# undef ERTS_PSD_SIZE
# define ERTS_PSD_SIZE 10
#endif
typedef struct {
void *data[ERTS_PSD_SIZE];
} ErtsPSD;
#ifdef ERTS_ENABLE_LOCK_CHECK
#define ERTS_LC_PSD_ANY_LOCK (~ERTS_PROC_LOCKS_ALL)
#define ERTS_PSD_ERROR_HANDLER_BUF_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_ERROR_HANDLER_BUF_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_SAVED_CALLS_BUF_GET_LOCKS ((ErtsProcLocks) 0)
#define ERTS_PSD_SAVED_CALLS_BUF_SET_LOCKS ((ErtsProcLocks) 0)
#define ERTS_PSD_SCHED_ID_GET_LOCKS ERTS_PROC_LOCK_STATUS
#define ERTS_PSD_SCHED_ID_SET_LOCKS ERTS_PROC_LOCK_STATUS
#define ERTS_PSD_CALL_TIME_BP_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_CALL_TIME_BP_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_DELAYED_GC_TASK_QS_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_DELAYED_GC_TASK_QS_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_NIF_TRAP_EXPORT_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_NIF_TRAP_EXPORT_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_ETS_OWNED_TABLES_GET_LOCKS ERTS_PROC_LOCK_STATUS
#define ERTS_PSD_ETS_OWNED_TABLES_SET_LOCKS ERTS_PROC_LOCK_STATUS
#define ERTS_PSD_ETS_FIXED_TABLES_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_ETS_FIXED_TABLES_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_DIST_ENTRY_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_DIST_ENTRY_SET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_PENDING_SUSPEND_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_PENDING_SUSPEND_SET_LOCKS ERTS_PROC_LOCK_MAIN
typedef struct {
ErtsProcLocks get_locks;
ErtsProcLocks set_locks;
} ErtsLcPSDLocks;
extern ErtsLcPSDLocks erts_psd_required_locks[ERTS_PSD_SIZE];
#endif
#define ERTS_SCHED_STAT_MODIFY_DISABLE 1
#define ERTS_SCHED_STAT_MODIFY_ENABLE 2
#define ERTS_SCHED_STAT_MODIFY_CLEAR 3
typedef struct {
erts_spinlock_t lock;
int enabled;
struct {
Eterm name;
Uint total_executed;
Uint executed;
Uint total_migrated;
Uint migrated;
} prio[ERTS_NO_PRIO_LEVELS];
} erts_sched_stat_t;
extern erts_sched_stat_t erts_sched_stat;
typedef struct {
Eterm reason;
ErlHeapFragment *bp;
} ErtsPendExit;
typedef struct ErtsProcSysTask_ ErtsProcSysTask;
typedef struct ErtsProcSysTaskQs_ ErtsProcSysTaskQs;
/* Defines to ease the change of memory architecture */
# define HEAP_START(p) (p)->heap
# define HEAP_TOP(p) (p)->htop
# define HEAP_LIMIT(p) (p)->stop
# define HEAP_END(p) (p)->hend
# define HEAP_SIZE(p) (p)->heap_sz
# define STACK_START(p) (p)->hend
# define STACK_TOP(p) (p)->stop
# define STACK_END(p) (p)->htop
# define HIGH_WATER(p) (p)->high_water
# define OLD_HEND(p) (p)->old_hend
# define OLD_HTOP(p) (p)->old_htop
# define OLD_HEAP(p) (p)->old_heap
# define GEN_GCS(p) (p)->gen_gcs
# define MAX_GEN_GCS(p) (p)->max_gen_gcs
# define FLAGS(p) (p)->flags
# define MBUF(p) (p)->mbuf
# define HALLOC_MBUF(p) (p)->halloc_mbuf
# define MBUF_SIZE(p) (p)->mbuf_sz
# define MSO(p) (p)->off_heap
# define MIN_HEAP_SIZE(p) (p)->min_heap_size
# define MIN_VHEAP_SIZE(p) (p)->min_vheap_size
# define BIN_VHEAP_SZ(p) (p)->bin_vheap_sz
# define BIN_OLD_VHEAP_SZ(p) (p)->bin_old_vheap_sz
# define BIN_OLD_VHEAP(p) (p)->bin_old_vheap
# define MAX_HEAP_SIZE_GET(p) ((p)->max_heap_size >> 2)
# define MAX_HEAP_SIZE_SET(p, sz) ((p)->max_heap_size = ((sz) << 2) | \
MAX_HEAP_SIZE_FLAGS_GET(p))
# define MAX_HEAP_SIZE_FLAGS_GET(p) ((p)->max_heap_size & 0x3)
# define MAX_HEAP_SIZE_FLAGS_SET(p, flags) ((p)->max_heap_size = flags | \
((p)->max_heap_size & ~0x3))
# define MAX_HEAP_SIZE_KILL 1
# define MAX_HEAP_SIZE_LOG 2
struct process {
ErtsPTabElementCommon common; /* *Need* to be first in struct */
/* All fields in the PCB that differs between different heap
* architectures, have been moved to the end of this struct to
* make sure that as few offsets as possible differ. Different
* offsets between memory architectures in this struct, means that
* native code have to use functions instead of constants.
*/
Eterm* htop; /* Heap top */
Eterm* stop; /* Stack top */
Eterm* heap; /* Heap start */
Eterm* hend; /* Heap end */
Eterm* abandoned_heap;
Uint heap_sz; /* Size of heap in words */
Uint min_heap_size; /* Minimum size of heap (in words). */
Uint min_vheap_size; /* Minimum size of virtual heap (in words). */
Uint max_heap_size; /* Maximum size of heap (in words). */
#if !defined(NO_FPE_SIGNALS) || defined(HIPE)
volatile unsigned long fp_exception;
#endif
#ifdef HIPE
/* HiPE-specific process fields. Put it early in struct process,
to enable smaller & faster addressing modes on the x86. */
struct hipe_process_state hipe;
#endif
/*
* Saved x registers.
*/
Uint arity; /* Number of live argument registers (only valid
* when process is *not* running).
*/
Eterm* arg_reg; /* Pointer to argument registers. */
unsigned max_arg_reg; /* Maximum number of argument registers available. */
Eterm def_arg_reg[6]; /* Default array for argument registers. */
BeamInstr* cp; /* (untagged) Continuation pointer (for threaded code). */
BeamInstr* i; /* Program counter for threaded code. */
Sint catches; /* Number of catches on stack */
Sint fcalls; /*
* Number of reductions left to execute.
* Only valid for the current process.
*/
Uint32 rcount; /* suspend count */
int schedule_count; /* Times left to reschedule a low prio process */
Uint reds; /* No of reductions for this process */
Eterm group_leader; /* Pid in charge (can be boxed) */
Uint flags; /* Trap exit, etc (no trace flags anymore) */
Eterm fvalue; /* Exit & Throw value (failure reason) */
Uint freason; /* Reason for detected failure */
Eterm ftrace; /* Latest exception stack trace dump */
Process *next; /* Pointer to next process in run queue */
ErtsSignalPrivQueues sig_qs; /* Signal queues */
ErtsBifTimers *bif_timers; /* Bif timers aiming at this process */
ProcDict *dictionary; /* Process dictionary, may be NULL */
Uint seq_trace_clock;
Uint seq_trace_lastcnt;
Eterm seq_trace_token; /* Sequential trace token (tuple size 5 see below) */
#ifdef USE_VM_PROBES
Eterm dt_utag; /* Place to store the dynamc trace user tag */
Uint dt_utag_flags; /* flag field for the dt_utag */
#endif
union {
void *terminate;
ErtsCodeMFA initial; /* Initial module(0), function(1), arity(2),
often used instead of pointer to funcinfo
instruction. */
} u;
ErtsCodeMFA* current; /* Current Erlang function, part of the funcinfo:
* module(0), function(1), arity(2)
* (module and functions are tagged atoms;
* arity an untagged integer).
*/
/*
* Information mainly for post-mortem use (erl crash dump).
*/
Eterm parent; /* Pid of process that created this process. */
Uint32 static_flags; /* Flags that do *not* change */
/* This is the place, where all fields that differs between memory
* architectures, have gone to.
*/
Eterm *high_water;
Eterm *old_hend; /* Heap pointers for generational GC. */
Eterm *old_htop;
Eterm *old_heap;
Uint16 gen_gcs; /* Number of (minor) generational GCs. */
Uint16 max_gen_gcs; /* Max minor gen GCs before fullsweep. */
ErlOffHeap off_heap; /* Off-heap data updated by copy_struct(). */
ErlHeapFragment* mbuf; /* Pointer to heap fragment list */
ErlHeapFragment* live_hf_end;
ErtsMessage *msg_frag; /* Pointer to message fragment list */
Uint mbuf_sz; /* Total size of heap fragments and message fragments */
erts_atomic_t psd; /* Rarely used process specific data */
Uint64 bin_vheap_sz; /* Virtual heap block size for binaries */
Uint64 bin_old_vheap_sz; /* Virtual old heap block size for binaries */
Uint64 bin_old_vheap; /* Virtual old heap size for binaries */
ErtsProcSysTaskQs *sys_task_qs;
ErtsProcSysTask *dirty_sys_tasks;
erts_atomic32_t state; /* Process state flags (see ERTS_PSFLG_*) */
erts_atomic32_t dirty_state; /* Process dirty state flags (see ERTS_PDSFLG_*) */
ErtsSignalInQueue sig_inq;
ErlTraceMessageQueue *trace_msg_q;
erts_proc_lock_t lock;
ErtsSchedulerData *scheduler_data;
erts_atomic_t run_queue;
#ifdef CHECK_FOR_HOLES
Eterm* last_htop; /* No need to scan the heap below this point. */
ErlHeapFragment* last_mbuf; /* No need to scan beyond this mbuf. */
ErlHeapFragment* heap_hfrag; /* Heap abandoned, htop now lives in this frag */
#endif
#ifdef DEBUG
Eterm* last_old_htop; /*
* No need to scan the old heap below this point
* when looking for invalid pointers into the new heap or
* heap fragments.
*/
#endif
#ifdef FORCE_HEAP_FRAGS
Uint space_verified; /* Avoid HAlloc forcing heap fragments when */
Eterm* space_verified_from; /* we rely on available heap space (TestHeap) */
#endif
#ifdef DEBUG
Uint debug_reds_in;
#endif
};
extern Eterm erts_init_process_id; /* pid of init process */
extern const Process erts_invalid_process;
#ifdef CHECK_FOR_HOLES
# define INIT_HOLE_CHECK(p) \
do { \
(p)->last_htop = 0; \
(p)->last_mbuf = 0; \
(p)->heap_hfrag = NULL; \
} while (0)
# define ERTS_HOLE_CHECK(p) erts_check_for_holes((p))
void erts_check_for_holes(Process* p);
#else
# define INIT_HOLE_CHECK(p)
# define ERTS_HOLE_CHECK(p)
#endif
/*
* The MBUF_GC_FACTOR decides how easily a process is subject to GC
* due to message buffers allocated outside the heap.
* The larger the factor, the easier the process gets GCed.
* On a small memory system with lots of processes, this makes a significant
* difference, especially since the GCs help fragmentation quite a bit too.
*/
#if defined(SMALL_MEMORY)
#define MBUF_GC_FACTOR 4
#else
#define MBUF_GC_FACTOR 1
#endif
#define SEQ_TRACE_TOKEN(p) ((p)->seq_trace_token)
#if ERTS_NO_PROC_PRIO_LEVELS > 4
# error "Need to increase ERTS_PSFLG_PRIO_SHIFT"
#endif
#define ERTS_PSFLGS_PRIO_BITS 2
#define ERTS_PSFLGS_PRIO_MASK \
((((erts_aint32_t) 1) << ERTS_PSFLGS_PRIO_BITS) - 1)
#define ERTS_PSFLGS_ACT_PRIO_OFFSET (0*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_USR_PRIO_OFFSET (1*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_PRQ_PRIO_OFFSET (2*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_ZERO_BIT_OFFSET (3*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_QMASK_BITS 4
#define ERTS_PSFLGS_QMASK \
((((erts_aint32_t) 1) << ERTS_PSFLGS_QMASK_BITS) - 1)
#define ERTS_PSFLGS_IN_PRQ_MASK_OFFSET \
ERTS_PSFLGS_ZERO_BIT_OFFSET
#define ERTS_PSFLG_BIT(N) \
(((erts_aint32_t) 1) << (ERTS_PSFLGS_ZERO_BIT_OFFSET + (N)))
/*
* ACT_PRIO -> Active prio, i.e., currently active prio. This
* prio may be higher than user prio.
* USR_PRIO -> User prio. i.e., prio the user has set.
* PRQ_PRIO -> Prio queue prio, i.e., prio queue currently
* enqueued in.
*
* Update etp-proc-state-int in $ERL_TOP/erts/etc/unix/etp-commands.in
* when changing ERTS_PSFLG_*.
*/
#define ERTS_PSFLGS_ACT_PRIO_MASK \
(ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_ACT_PRIO_OFFSET)
#define ERTS_PSFLGS_USR_PRIO_MASK \
(ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_USR_PRIO_OFFSET)
#define ERTS_PSFLGS_PRQ_PRIO_MASK \
(ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_PRQ_PRIO_OFFSET)
#define ERTS_PSFLG_IN_PRQ_MAX ERTS_PSFLG_BIT(0)
#define ERTS_PSFLG_IN_PRQ_HIGH ERTS_PSFLG_BIT(1)
#define ERTS_PSFLG_IN_PRQ_NORMAL ERTS_PSFLG_BIT(2)
#define ERTS_PSFLG_IN_PRQ_LOW ERTS_PSFLG_BIT(3)
#define ERTS_PSFLG_FREE ERTS_PSFLG_BIT(4)
#define ERTS_PSFLG_EXITING ERTS_PSFLG_BIT(5)
#define ERTS_PSFLG_UNUSED ERTS_PSFLG_BIT(6)
#define ERTS_PSFLG_ACTIVE ERTS_PSFLG_BIT(7)
#define ERTS_PSFLG_IN_RUNQ ERTS_PSFLG_BIT(8)
#define ERTS_PSFLG_RUNNING ERTS_PSFLG_BIT(9)
#define ERTS_PSFLG_SUSPENDED ERTS_PSFLG_BIT(10)
#define ERTS_PSFLG_GC ERTS_PSFLG_BIT(11)
#define ERTS_PSFLG_SYS_TASKS ERTS_PSFLG_BIT(12)
#define ERTS_PSFLG_SIG_IN_Q ERTS_PSFLG_BIT(13)
#define ERTS_PSFLG_ACTIVE_SYS ERTS_PSFLG_BIT(14)
#define ERTS_PSFLG_RUNNING_SYS ERTS_PSFLG_BIT(15)
#define ERTS_PSFLG_PROXY ERTS_PSFLG_BIT(16)
#define ERTS_PSFLG_DELAYED_SYS ERTS_PSFLG_BIT(17)
#define ERTS_PSFLG_OFF_HEAP_MSGQ ERTS_PSFLG_BIT(18)
#define ERTS_PSFLG_SIG_Q ERTS_PSFLG_BIT(19)
#define ERTS_PSFLG_DIRTY_CPU_PROC ERTS_PSFLG_BIT(20)
#define ERTS_PSFLG_DIRTY_IO_PROC ERTS_PSFLG_BIT(21)
#define ERTS_PSFLG_DIRTY_ACTIVE_SYS ERTS_PSFLG_BIT(22)
#define ERTS_PSFLG_DIRTY_RUNNING ERTS_PSFLG_BIT(23)
#define ERTS_PSFLG_DIRTY_RUNNING_SYS ERTS_PSFLG_BIT(24)
#define ERTS_PSFLG_MAX (ERTS_PSFLGS_ZERO_BIT_OFFSET + 24)
#define ERTS_PSFLGS_DIRTY_WORK (ERTS_PSFLG_DIRTY_CPU_PROC \
| ERTS_PSFLG_DIRTY_IO_PROC \
| ERTS_PSFLG_DIRTY_ACTIVE_SYS)
#define ERTS_PSFLGS_IN_PRQ_MASK (ERTS_PSFLG_IN_PRQ_MAX \
| ERTS_PSFLG_IN_PRQ_HIGH \
| ERTS_PSFLG_IN_PRQ_NORMAL \
| ERTS_PSFLG_IN_PRQ_LOW)
#define ERTS_PSFLGS_VOLATILE_HEAP (ERTS_PSFLG_EXITING \
| ERTS_PSFLG_DIRTY_RUNNING \
| ERTS_PSFLG_DIRTY_RUNNING_SYS)
#define ERTS_PSFLGS_GET_ACT_PRIO(PSFLGS) \
(((PSFLGS) >> ERTS_PSFLGS_ACT_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)
#define ERTS_PSFLGS_GET_USR_PRIO(PSFLGS) \
(((PSFLGS) >> ERTS_PSFLGS_USR_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)
#define ERTS_PSFLGS_GET_PRQ_PRIO(PSFLGS) \
(((PSFLGS) >> ERTS_PSFLGS_PRQ_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)
/*
* Flags in the dirty_state field.
*/
#define ERTS_PDSFLG_IN_CPU_PRQ_MAX (((erts_aint32_t) 1) << 0)
#define ERTS_PDSFLG_IN_CPU_PRQ_HIGH (((erts_aint32_t) 1) << 1)
#define ERTS_PDSFLG_IN_CPU_PRQ_NORMAL (((erts_aint32_t) 1) << 2)
#define ERTS_PDSFLG_IN_CPU_PRQ_LOW (((erts_aint32_t) 1) << 3)
#define ERTS_PDSFLG_IN_IO_PRQ_MAX (((erts_aint32_t) 1) << 4)
#define ERTS_PDSFLG_IN_IO_PRQ_HIGH (((erts_aint32_t) 1) << 5)
#define ERTS_PDSFLG_IN_IO_PRQ_NORMAL (((erts_aint32_t) 1) << 6)
#define ERTS_PDSFLG_IN_IO_PRQ_LOW (((erts_aint32_t) 1) << 7)
#define ERTS_PDSFLGS_QMASK ERTS_PSFLGS_QMASK
#define ERTS_PDSFLGS_IN_CPU_PRQ_MASK_OFFSET 0
#define ERTS_PDSFLGS_IN_IO_PRQ_MASK_OFFSET ERTS_PSFLGS_QMASK_BITS
#define ERTS_PDSFLG_IN_CPU_PRQ_MASK (ERTS_PDSFLG_IN_CPU_PRQ_MAX \
| ERTS_PDSFLG_IN_CPU_PRQ_HIGH \
| ERTS_PDSFLG_IN_CPU_PRQ_NORMAL\
| ERTS_PDSFLG_IN_CPU_PRQ_LOW)
#define ERTS_PDSFLG_IN_IO_PRQ_MASK (ERTS_PDSFLG_IN_CPU_PRQ_MAX \
| ERTS_PDSFLG_IN_CPU_PRQ_HIGH \
| ERTS_PDSFLG_IN_CPU_PRQ_NORMAL\
| ERTS_PDSFLG_IN_CPU_PRQ_LOW)
/*
* Static flags that do not change after process creation.
*/
#define ERTS_STC_FLG_SYSTEM_PROC (((Uint32) 1) << 0)
#define ERTS_STC_FLG_SHADOW_PROC (((Uint32) 1) << 1)
/* The sequential tracing token is a tuple of size 5:
*
* {Flags, Label, Serial, Sender}
*/
#define SEQ_TRACE_TOKEN_ARITY(p) (arityval(*(tuple_val(SEQ_TRACE_TOKEN(p)))))
#define SEQ_TRACE_TOKEN_FLAGS(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 1))
#define SEQ_TRACE_TOKEN_LABEL(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 2))
#define SEQ_TRACE_TOKEN_SERIAL(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 3))
#define SEQ_TRACE_TOKEN_SENDER(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 4))
#define SEQ_TRACE_TOKEN_LASTCNT(p) (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 5))
/* used when we have unit32 token */
#define SEQ_TRACE_T_ARITY(token) (arityval(*(tuple_val(token))))
#define SEQ_TRACE_T_FLAGS(token) (*(tuple_val(token) + 1))
#define SEQ_TRACE_T_LABEL(token) (*(tuple_val(token) + 2))
#define SEQ_TRACE_T_SERIAL(token) (*(tuple_val(token) + 3))
#define SEQ_TRACE_T_SENDER(token) (*(tuple_val(token) + 4))
#define SEQ_TRACE_T_LASTCNT(token) (*(tuple_val(token) + 5))
#ifdef USE_VM_PROBES
/* The dtrace probe for seq_trace only supports 'int' labels, so we represent
* all values that won't fit into a 32-bit signed integer as ERTS_SINT32_MIN
* (bigints, tuples, etc). */
#define SEQ_TRACE_T_DTRACE_LABEL(token) \
DTRACE_SEQ_TRACE_LABEL__(SEQ_TRACE_T_LABEL(token))
#define DTRACE_SEQ_TRACE_LABEL__(label_term) \
(is_small((label_term)) ? \
((signed_val((label_term)) <= ERTS_SINT32_MAX && \
signed_val((label_term)) >= ERTS_SINT32_MIN) ? \
signed_val((label_term)) : ERTS_SINT32_MIN) \
: ERTS_SINT32_MIN)
#endif
/*
* Possible flags for the flags field in ErlSpawnOpts below.
*/
#define SPO_LINK 1
#define SPO_USE_ARGS 2
#define SPO_MONITOR 4
#define SPO_SYSTEM_PROC 8
#define SPO_OFF_HEAP_MSGQ 16
#define SPO_ON_HEAP_MSGQ 32
extern int ERTS_WRITE_UNLIKELY(erts_default_spo_flags);
/*
* The following struct contains options for a process to be spawned.
*/
typedef struct {
int flags;
int error_code; /* Error code returned from create_process(). */
Eterm mref; /* Monitor ref returned (if SPO_MONITOR was given). */
/*
* The following items are only initialized if the SPO_USE_ARGS flag is set.
*/
Uint min_heap_size; /* Minimum heap size (must be a valued returned
* from next_heap_size()). */
Uint min_vheap_size; /* Minimum virtual heap size */
int priority; /* Priority for process. */
Uint16 max_gen_gcs; /* Maximum number of gen GCs before fullsweep. */
Uint max_heap_size; /* Maximum heap size in words */
Uint max_heap_flags; /* Maximum heap flags (kill | log) */
int scheduler;
} ErlSpawnOpts;
/*
* The KILL_CATCHES(p) macro kills pending catches for process p.
*/
#define KILL_CATCHES(p) (p)->catches = -1
/* Shrink heap fragment from _last_ HAlloc.
*/
ERTS_GLB_INLINE void erts_heap_frag_shrink(Process* p, Eterm* hp);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void erts_heap_frag_shrink(Process* p, Eterm* hp)
{
ErlHeapFragment* hf = MBUF(p);
Uint sz;
ASSERT(hf!=NULL && (hp - hf->mem < hf->alloc_size));
sz = hp - hf->mem;
p->mbuf_sz -= hf->used_size - sz;
hf->used_size = sz;
}
#endif /* inline */
Eterm* erts_heap_alloc(Process* p, Uint need, Uint xtra);
#ifdef CHECK_FOR_HOLES
Eterm* erts_set_hole_marker(Eterm* ptr, Uint sz);
#endif
extern erts_rwmtx_t erts_cpu_bind_rwmtx;
/* If any of the erts_system_monitor_* variables are set (enabled),
** erts_system_monitor must be != NIL, to allow testing on just
** the erts_system_monitor_* variables.
*/
extern Eterm ERTS_WRITE_UNLIKELY(erts_system_monitor);
extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_long_gc);
extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_long_schedule);
extern Uint ERTS_WRITE_UNLIKELY(erts_system_monitor_large_heap);
struct erts_system_monitor_flags_t {
unsigned int busy_port : 1;
unsigned int busy_dist_port : 1;
};
extern struct erts_system_monitor_flags_t erts_system_monitor_flags;
/* system_profile, same rules as for system_monitor.
erts_profile must be != NIL when
erts_profile_* is set. */
extern Eterm erts_system_profile;
struct erts_system_profile_flags_t {
unsigned int scheduler : 1;
unsigned int runnable_procs : 1;
unsigned int runnable_ports : 1;
unsigned int exclusive : 1;
};
extern struct erts_system_profile_flags_t erts_system_profile_flags;
extern int erts_system_profile_ts_type;
/* process flags */
#define F_HIBERNATE_SCHED (1 << 0) /* Schedule out after hibernate op */
#define F_INSLPQUEUE (1 << 1) /* Set if in timer queue */
#define F_TIMO (1 << 2) /* Set if timeout */
#define F_HEAP_GROW (1 << 3)
#define F_NEED_FULLSWEEP (1 << 4)
#define F_USING_DB (1 << 5) /* If have created tables */
#define F_DISTRIBUTION (1 << 6) /* Process used in distribution */
#define F_USING_DDLL (1 << 7) /* Process has used the DDLL interface */
#define F_HAVE_BLCKD_MSCHED (1 << 8) /* Process has blocked multi-scheduling */
#define F_UNUSED (1 << 9)
#define F_FORCE_GC (1 << 10) /* Force gc at process in-scheduling */
#define F_DISABLE_GC (1 << 11) /* Disable GC (see below) */
#define F_OFF_HEAP_MSGQ (1 << 12) /* Off heap msg queue */
#define F_ON_HEAP_MSGQ (1 << 13) /* On heap msg queue */
#define F_OFF_HEAP_MSGQ_CHNG (1 << 14) /* Off heap msg queue changing */
#define F_ABANDONED_HEAP_USE (1 << 15) /* Have usage of abandoned heap */
#define F_DELAY_GC (1 << 16) /* Similar to disable GC (see below) */
#define F_SCHDLR_ONLN_WAITQ (1 << 17) /* Process enqueued waiting to change schedulers online */
#define F_HAVE_BLCKD_NMSCHED (1 << 18) /* Process has blocked normal multi-scheduling */
#define F_HIPE_MODE (1 << 19) /* Process is executing in HiPE mode */
#define F_DELAYED_DEL_PROC (1 << 20) /* Delay delete process (dirty proc exit case) */
#define F_DIRTY_CLA (1 << 21) /* Dirty copy literal area scheduled */
#define F_DIRTY_GC_HIBERNATE (1 << 22) /* Dirty GC hibernate scheduled */
#define F_DIRTY_MAJOR_GC (1 << 23) /* Dirty major GC scheduled */
#define F_DIRTY_MINOR_GC (1 << 24) /* Dirty minor GC scheduled */
#define F_HIBERNATED (1 << 25) /* Hibernated */
#define F_LOCAL_SIGS_ONLY (1 << 26) /* Handle privq sigs only */
#define F_TRAP_EXIT (1 << 27) /* Trapping exit */
#define F_DEFERRED_SAVED_LAST (1 << 28) /* Deferred sig_qs.saved_last */
#define F_DELAYED_PSIGQS_LEN (1 << 29) /* Delayed update of sig_qs.len */
#define F_HIPE_RECV_LOCKED (1 << 30) /* HiPE message queue locked */
#define F_HIPE_RECV_YIELD (1 << 31) /* HiPE receive yield */
/*
* F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent
* GC of the process, but it is important to use the right
* one:
* - F_DISABLE_GC should *only* be used by BIFs. This when
* the BIF needs to yield while preventig a GC.
* - F_DELAY_GC should only be used when GC is temporarily
* disabled while the process is scheduled. A process must
* not be scheduled out while F_DELAY_GC is set.
*/
#define ERTS_TRACE_FLAGS_TS_TYPE_SHIFT 0
#define F_TRACE_FLAG(N) (1 << (ERTS_TRACE_TS_TYPE_BITS + (N)))
/* process trace_flags */
#define F_NOW_TS (ERTS_TRACE_FLG_NOW_TIMESTAMP \
<< ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_STRICT_MON_TS (ERTS_TRACE_FLG_STRICT_MONOTONIC_TIMESTAMP \
<< ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_MON_TS (ERTS_TRACE_FLG_MONOTONIC_TIMESTAMP \
<< ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_SENSITIVE F_TRACE_FLAG(0)
#define F_TRACE_SEND F_TRACE_FLAG(1)
#define F_TRACE_RECEIVE F_TRACE_FLAG(2)
#define F_TRACE_SOS F_TRACE_FLAG(3) /* Set on spawn */
#define F_TRACE_SOS1 F_TRACE_FLAG(4) /* Set on first spawn */
#define F_TRACE_SOL F_TRACE_FLAG(5) /* Set on link */
#define F_TRACE_SOL1 F_TRACE_FLAG(6) /* Set on first link */
#define F_TRACE_CALLS F_TRACE_FLAG(7)
#define F_TRACE_PROCS F_TRACE_FLAG(8)
#define F_TRACE_FIRST_CHILD F_TRACE_FLAG(9)
#define F_TRACE_SCHED F_TRACE_FLAG(10)
#define F_TRACE_GC F_TRACE_FLAG(11)
#define F_TRACE_ARITY_ONLY F_TRACE_FLAG(12)
#define F_TRACE_RETURN_TO F_TRACE_FLAG(13) /* Return_to trace when breakpoint tracing */
#define F_TRACE_SILENT F_TRACE_FLAG(14) /* No call trace msg suppress */
#define F_EXCEPTION_TRACE F_TRACE_FLAG(15) /* May have exception trace on stack */
/* port trace flags, currently the same as process trace flags */
#define F_TRACE_SCHED_PORTS F_TRACE_FLAG(17) /* Trace of port scheduling */
#define F_TRACE_SCHED_PROCS F_TRACE_FLAG(18) /* With virtual scheduling */
#define F_TRACE_PORTS F_TRACE_FLAG(19) /* Ports equivalent to F_TRACE_PROCS */
#define F_TRACE_SCHED_NO F_TRACE_FLAG(20) /* Trace with scheduler id */
#define F_TRACE_SCHED_EXIT F_TRACE_FLAG(21)
#define F_NUM_FLAGS (ERTS_TRACE_TS_TYPE_BITS + 22)
#ifdef DEBUG
# define F_INITIAL_TRACE_FLAGS (5 << F_NUM_FLAGS)
#else
# define F_INITIAL_TRACE_FLAGS 0
#endif
/* F_TIMESTAMP_MASK is a bit-field of all all timestamp types */
#define F_TIMESTAMP_MASK \
(ERTS_TRACE_TS_TYPE_MASK << ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define TRACEE_FLAGS ( F_TRACE_PROCS | F_TRACE_CALLS \
| F_TRACE_SOS | F_TRACE_SOS1| F_TRACE_RECEIVE \
| F_TRACE_SOL | F_TRACE_SOL1 | F_TRACE_SEND \
| F_TRACE_SCHED | F_TIMESTAMP_MASK | F_TRACE_GC \
| F_TRACE_ARITY_ONLY | F_TRACE_RETURN_TO \
| F_TRACE_SILENT | F_TRACE_SCHED_PROCS | F_TRACE_PORTS \
| F_TRACE_SCHED_PORTS | F_TRACE_SCHED_NO \
| F_TRACE_SCHED_EXIT )
#define ERTS_TRACEE_MODIFIER_FLAGS \
(F_TRACE_SILENT | F_TIMESTAMP_MASK | F_TRACE_SCHED_NO \
| F_TRACE_RECEIVE | F_TRACE_SEND)
#define ERTS_PORT_TRACEE_FLAGS \
(ERTS_TRACEE_MODIFIER_FLAGS | F_TRACE_PORTS | F_TRACE_SCHED_PORTS)
#define ERTS_PROC_TRACEE_FLAGS \
((TRACEE_FLAGS & ~ERTS_PORT_TRACEE_FLAGS) | ERTS_TRACEE_MODIFIER_FLAGS)
#define SEQ_TRACE_FLAG(N) (1 << (ERTS_TRACE_TS_TYPE_BITS + (N)))
#define ERTS_SIG_ENABLE_TRACE_FLAGS \
( F_TRACE_RECEIVE | F_TRACE_PROCS)
/*
* F_TRACE_RECEIVE is always enabled/disable via signaling.
* F_TRACE_PROCS enable/disable F_TRACE_PROCS_SIG via signaling.
*/
/* Sequential trace flags */
/* SEQ_TRACE_TIMESTAMP_MASK is a bit-field */
#define SEQ_TRACE_TIMESTAMP_MASK \
(ERTS_TRACE_TS_TYPE_MASK << ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#define SEQ_TRACE_SEND (1 << 0)
#define SEQ_TRACE_RECEIVE (1 << 1)
#define SEQ_TRACE_PRINT (1 << 2)
/* (This three-bit gap contains the timestamp.) */
#define SEQ_TRACE_SPAWN (1 << 6)
#define ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT 3
#define SEQ_TRACE_NOW_TS (ERTS_TRACE_FLG_NOW_TIMESTAMP \
<< ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#define SEQ_TRACE_STRICT_MON_TS (ERTS_TRACE_FLG_STRICT_MONOTONIC_TIMESTAMP \
<< ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#define SEQ_TRACE_MON_TS (ERTS_TRACE_FLG_MONOTONIC_TIMESTAMP \
<< ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#ifdef USE_VM_PROBES
#define DT_UTAG_PERMANENT (1 << 0)
#define DT_UTAG_SPREADING (1 << 1)
#define DT_UTAG(P) ((P)->dt_utag)
#define DT_UTAG_FLAGS(P) ((P)->dt_utag_flags)
#endif
#define CANCEL_TIMER(P) \
do { \
if ((P)->flags & (F_INSLPQUEUE|F_TIMO)) { \
if ((P)->flags & F_INSLPQUEUE) \
erts_cancel_proc_timer((P)); \
else \
(P)->flags &= ~F_TIMO; \
} \
} while (0)
#define ERTS_NUM_DIRTY_CPU_RUNQS 1
#define ERTS_NUM_DIRTY_IO_RUNQS 1
#define ERTS_NUM_DIRTY_RUNQS (ERTS_NUM_DIRTY_CPU_RUNQS+ERTS_NUM_DIRTY_IO_RUNQS)
#define ERTS_RUNQ_IX(IX) \
(ASSERT(0 <= (IX) && (IX) < erts_no_run_queues+ERTS_NUM_DIRTY_RUNQS), \
&erts_aligned_run_queues[(IX)].runq)
#define ERTS_RUNQ_IX_IS_DIRTY(IX) \
(ASSERT(0 <= (IX) && (IX) < erts_no_run_queues+ERTS_NUM_DIRTY_RUNQS), \
(erts_no_run_queues <= (IX)))
#define ERTS_DIRTY_RUNQ_IX(IX) \
(ASSERT(ERTS_RUNQ_IX_IS_DIRTY(IX)), \
&erts_aligned_run_queues[(IX)].runq)
#define ERTS_DIRTY_CPU_RUNQ (&erts_aligned_run_queues[erts_no_run_queues].runq)
#define ERTS_DIRTY_IO_RUNQ (&erts_aligned_run_queues[erts_no_run_queues+1].runq)
#define ERTS_RUNQ_IS_DIRTY_CPU_RUNQ(RQ) ((RQ) == ERTS_DIRTY_CPU_RUNQ)
#define ERTS_RUNQ_IS_DIRTY_IO_RUNQ(RQ) ((RQ) == ERTS_DIRTY_IO_RUNQ)
#define ERTS_SCHEDULER_IX(IX) \
(ASSERT(0 <= (IX) && (IX) < erts_no_schedulers), \
&erts_aligned_scheduler_data[(IX)].esd)
#define ERTS_DIRTY_CPU_SCHEDULER_IX(IX) \
(ASSERT(0 <= (IX) && (IX) < erts_no_dirty_cpu_schedulers), \
&erts_aligned_dirty_cpu_scheduler_data[(IX)].esd)
#define ERTS_DIRTY_IO_SCHEDULER_IX(IX) \
(ASSERT(0 <= (IX) && (IX) < erts_no_dirty_io_schedulers), \
&erts_aligned_dirty_io_scheduler_data[(IX)].esd)
#define ERTS_SCHEDULER_IS_DIRTY(ESDP) \
((ESDP)->type != ERTS_SCHED_NORMAL)
#define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) \
((ESDP)->type == ERTS_SCHED_DIRTY_CPU)
#define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP) \
((ESDP)->type == ERTS_SCHED_DIRTY_IO)
void erts_pre_init_process(void);
void erts_late_init_process(void);
void erts_early_init_scheduling(int);
void erts_init_scheduling(int, int, int, int, int, int);
void erts_execute_dirty_system_task(Process *c_p);
int erts_set_gc_state(Process *c_p, int enable);
Eterm erts_sched_wall_time_request(Process *c_p, int set, int enable,
int dirty_cpu, int want_dirty_io);
Eterm erts_system_check_request(Process *c_p);
Eterm erts_gc_info_request(Process *c_p);
Uint64 erts_get_proc_interval(void);
Uint64 erts_ensure_later_proc_interval(Uint64);
Uint64 erts_step_proc_interval(void);
ErtsProcList *erts_proclist_create(Process *);
ErtsProcList *erts_proclist_copy(ErtsProcList *);
void erts_proclist_destroy(ErtsProcList *);
void erts_proclist_dump(fmtfn_t to, void *to_arg, ErtsProcList*);
ERTS_GLB_INLINE int erts_proclist_same(ErtsProcList *, Process *);
ERTS_GLB_INLINE void erts_proclist_store_first(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE void erts_proclist_store_last(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_first(ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_last(ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_next(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_prev(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_first(ErtsProcList **);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_last(ErtsProcList **);
ERTS_GLB_INLINE int erts_proclist_fetch(ErtsProcList **, ErtsProcList **);
ERTS_GLB_INLINE void erts_proclist_remove(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_empty(ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_first(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_last(ErtsProcList *, ErtsProcList *);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE int
erts_proclist_same(ErtsProcList *plp, Process *p)
{
return ((plp->u.pid == p->common.id || plp->u.p == p)
&& (plp->started_interval
== p->common.u.alive.started_interval));
}
ERTS_GLB_INLINE void erts_proclist_store_first(ErtsProcList **list,
ErtsProcList *element)
{
if (!*list)
element->next = element->prev = element;
else {
element->prev = (*list)->prev;
element->next = *list;
element->prev->next = element;
element->next->prev = element;
}
*list = element;
}
ERTS_GLB_INLINE void erts_proclist_store_last(ErtsProcList **list,
ErtsProcList *element)
{
if (!*list) {
element->next = element->prev = element;
*list = element;
}
else {
element->prev = (*list)->prev;
element->next = *list;
element->prev->next = element;
element->next->prev = element;
}
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_first(ErtsProcList *list)
{
return list;
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_last(ErtsProcList *list)
{
if (!list)
return NULL;
else
return list->prev;
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_next(ErtsProcList *list,
ErtsProcList *element)
{
ErtsProcList *next;
ASSERT(list && element);
next = element->next;
return list == next ? NULL : next;
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_prev(ErtsProcList *list,
ErtsProcList *element)
{
ErtsProcList *prev;
ASSERT(list && element);
prev = element->prev;
return list == element ? NULL : prev;
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_first(ErtsProcList **list)
{
if (!*list)
return NULL;
else {
ErtsProcList *res = *list;
if (res->next == *list)
*list = NULL;
else
*list = res->next;
res->next->prev = res->prev;
res->prev->next = res->next;
return res;
}
}
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_last(ErtsProcList **list)
{
if (!*list)
return NULL;
else {
ErtsProcList *res = (*list)->prev;
if (res == *list)
*list = NULL;
res->next->prev = res->prev;
res->prev->next = res->next;
return res;
}
}
ERTS_GLB_INLINE int erts_proclist_fetch(ErtsProcList **list_first,
ErtsProcList **list_last)
{
if (!*list_first) {
if (list_last)
*list_last = NULL;
return 0;
}
else {
if (list_last)
*list_last = (*list_first)->prev;
(*list_first)->prev->next = NULL;
(*list_first)->prev = NULL;
return !0;
}
}
ERTS_GLB_INLINE void erts_proclist_remove(ErtsProcList **list,
ErtsProcList *element)
{
ASSERT(list && *list);
if (*list == element) {
*list = element->next;
if (*list == element)
*list = NULL;
}
element->next->prev = element->prev;
element->prev->next = element->next;
}
ERTS_GLB_INLINE int erts_proclist_is_empty(ErtsProcList *list)
{
return list == NULL;
}
ERTS_GLB_INLINE int erts_proclist_is_first(ErtsProcList *list,
ErtsProcList *element)
{
ASSERT(list && element);
return list == element;
}
ERTS_GLB_INLINE int erts_proclist_is_last(ErtsProcList *list,
ErtsProcList *element)
{
ASSERT(list && element);
return list->prev == element;
}
#endif
int erts_sched_set_wakeup_other_threshold(ErtsSchedType sched_type, char *str);
int erts_sched_set_wakeup_other_type(ErtsSchedType sched_type, char *str);
int erts_sched_set_busy_wait_threshold(ErtsSchedType sched_type, char *str);
int erts_sched_set_wake_cleanup_threshold(char *);
void erts_schedule_thr_prgr_later_op(void (*)(void *),
void *,
ErtsThrPrgrLaterOp *);
void erts_schedule_thr_prgr_later_cleanup_op(void (*)(void *),
void *,
ErtsThrPrgrLaterOp *,
UWord);
void erts_schedule_complete_off_heap_message_queue_change(Eterm pid);
struct db_fixation;
void erts_schedule_ets_free_fixation(Eterm pid, struct db_fixation*);
void erts_schedule_flush_trace_messages(Process *proc, int force_on_proc);
int erts_flush_trace_messages(Process *c_p, ErtsProcLocks locks);
int erts_sig_prio(Eterm pid, int prio);
#if defined(ERTS_ENABLE_LOCK_CHECK)
int erts_dbg_check_halloc_lock(Process *p);
#endif
void
erts_schedulers_state(Uint *, Uint *, Uint *, Uint *, Uint *, Uint *, Uint *, Uint *);
ErtsSchedSuspendResult
erts_set_schedulers_online(Process *p,
ErtsProcLocks plocks,
Sint new_no,
Sint *old_no,
int dirty_only);
ErtsSchedSuspendResult
erts_block_multi_scheduling(Process *, ErtsProcLocks, int, int, int);
int erts_is_multi_scheduling_blocked(void);
Eterm erts_multi_scheduling_blockers(Process *, int);
void erts_start_schedulers(void);
void erts_alloc_notify_delayed_dealloc(int);
void erts_alloc_ensure_handle_delayed_dealloc_call(int);
void erts_notify_canceled_timer(ErtsSchedulerData *, int);
void erts_notify_check_async_ready_queue(void *);
void erts_notify_code_ix_activation(Process* p, ErtsThrPrgrVal later);
void erts_notify_finish_breakpointing(Process* p);
void erts_schedule_misc_aux_work(int sched_id,
void (*func)(void *),
void *arg);
void erts_schedule_multi_misc_aux_work(int ignore_self,
int max_sched,
void (*func)(void *),
void *arg);
erts_aint32_t erts_set_aux_work_timeout(int, erts_aint32_t, int);
void erts_aux_work_timeout_late_init(ErtsSchedulerData *esdp);
void erts_sched_notify_check_cpu_bind(void);
Uint erts_active_schedulers(void);
void erts_init_process(int, int, int);
Eterm erts_process_state2status(erts_aint32_t);
Eterm erts_process_status(Process *, Eterm);
Uint erts_run_queues_len(Uint *, int, int, int);
void erts_add_to_runq(Process *);
Eterm erts_bound_schedulers_term(Process *c_p);
Eterm erts_get_cpu_topology_term(Process *c_p, Eterm which);
Eterm erts_get_schedulers_binds(Process *c_p);
Eterm erts_set_cpu_topology(Process *c_p, Eterm term);
Eterm erts_bind_schedulers(Process *c_p, Eterm how);
ErtsRunQueue *erts_schedid2runq(Uint);
Process *erts_schedule(ErtsSchedulerData *, Process*, int);
void erts_schedule_misc_op(void (*)(void *), void *);
Eterm erl_create_process(Process*, Eterm, Eterm, Eterm, ErlSpawnOpts*);
void erts_set_self_exiting(Process *, Eterm);
void erts_do_exit_process(Process*, Eterm);
void erts_continue_exit_process(Process *);
void erts_proc_exit_link(Process *, ErtsLink *, Uint16, Eterm, Eterm);
/* Begin System profile */
Uint erts_runnable_process_count(void);
/* End System profile */
void erts_init_empty_process(Process *p);
void erts_cleanup_empty_process(Process* p);
#ifdef DEBUG
void erts_debug_verify_clean_empty_process(Process* p);
#endif
void erts_stack_dump(fmtfn_t to, void *to_arg, Process *);
void erts_limited_stack_trace(fmtfn_t to, void *to_arg, Process *);
void erts_program_counter_info(fmtfn_t to, void *to_arg, Process *);
void erts_print_scheduler_info(fmtfn_t to, void *to_arg, ErtsSchedulerData *esdp);
void erts_print_run_queue_info(fmtfn_t, void *to_arg, ErtsRunQueue*);
void erts_dump_extended_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg);
void erts_dump_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg);
Eterm erts_process_info(Process *c_p, ErtsHeapFactory *hfact,
Process *rp, ErtsProcLocks rp_locks,
int *item_ix, int item_ix_len,
int flags, Uint reserve_size, Uint *reds);
typedef struct {
Process *c_p;
Eterm reason;
ErtsLink *dist_links;
ErtsMonitor *dist_monitors;
Eterm dist_state;
} ErtsProcExitContext;
int erts_proc_exit_handle_monitor(ErtsMonitor *mon, void *vctxt, Sint reds);
int erts_proc_exit_handle_link(ErtsLink *lnk, void *vctxt, Sint reds);
Eterm erts_get_process_priority(erts_aint32_t state);
Eterm erts_set_process_priority(Process *p, Eterm prio);
Uint erts_get_total_context_switches(void);
void erts_get_total_reductions(Uint *, Uint *);
void erts_get_exact_total_reductions(Process *, Uint *, Uint *);
Eterm erts_fake_scheduler_bindings(Process *p, Eterm how);
void erts_sched_stat_modify(int what);
Eterm erts_sched_stat_term(Process *p, int total);
void erts_free_proc(Process *);
void erts_suspend(Process*, ErtsProcLocks, Port*);
void erts_resume(Process*, ErtsProcLocks);
int erts_resume_processes(ErtsProcList *);
void erts_deep_process_dump(fmtfn_t, void *);
Eterm erts_get_reader_groups_map(Process *c_p);
Eterm erts_debug_reader_groups_map(Process *c_p, int groups);
Uint erts_debug_nbalance(void);
#define ERTS_DEBUG_WAIT_COMPLETED_DEALLOCATIONS (1 << 0)
#define ERTS_DEBUG_WAIT_COMPLETED_TIMER_CANCELLATIONS (1 << 1)
int erts_debug_wait_completed(Process *c_p, int flags);
Uint erts_process_memory(Process *c_p, int include_sigs_in_transit);
#ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
# define ERTS_VERIFY_UNUSED_TEMP_ALLOC(P) \
do { \
ErtsSchedulerData *esdp__ = ((P) \
? erts_proc_sched_data((Process *) (P)) \
: erts_get_scheduler_data()); \
if (esdp__ && !ERTS_SCHEDULER_IS_DIRTY(esdp__)) \
esdp__->verify_unused_temp_alloc( \
esdp__->verify_unused_temp_alloc_data); \
} while (0)
#else
# define ERTS_VERIFY_UNUSED_TEMP_ALLOC(ESDP)
#endif
ErtsSchedulerData *erts_get_scheduler_data(void);
void erts_schedule_process(Process *, erts_aint32_t, ErtsProcLocks);
erts_aint32_t erts_proc_sys_schedule(Process *p, erts_aint32_t state,
erts_aint32_t enable_flag);
ERTS_GLB_INLINE void erts_proc_notify_new_message(Process *p, ErtsProcLocks locks);
ERTS_GLB_INLINE void erts_schedule_dirty_sys_execution(Process *c_p);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void
erts_proc_notify_new_message(Process *p, ErtsProcLocks locks)
{
/* No barrier needed, due to msg lock */
erts_aint32_t state = erts_atomic32_read_nob(&p->state);
if (!(state & ERTS_PSFLG_ACTIVE))
erts_schedule_process(p, state, locks);
}
ERTS_GLB_INLINE void
erts_schedule_dirty_sys_execution(Process *c_p)
{
erts_aint32_t a, n, e;
a = erts_atomic32_read_nob(&c_p->state);
/*
* Only a currently executing process schedules
* itself for dirty-sys execution...
*/
ASSERT(a & (ERTS_PSFLG_RUNNING|ERTS_PSFLG_RUNNING_SYS));
/* Don't set dirty-active-sys if we are about to exit... */
while (!(a & (ERTS_PSFLG_DIRTY_ACTIVE_SYS
| ERTS_PSFLG_EXITING))) {
e = a;
n = a | ERTS_PSFLG_DIRTY_ACTIVE_SYS;
a = erts_atomic32_cmpxchg_mb(&c_p->state, n, e);
if (a == e)
break; /* dirty-active-sys set */
}
}
#endif
#if defined(ERTS_ENABLE_LOCK_CHECK)
#define ERTS_PROCESS_LOCK_ONLY_LOCK_CHECK_PROTO__
#include "erl_process_lock.h"
#undef ERTS_PROCESS_LOCK_ONLY_LOCK_CHECK_PROTO__
#define ERTS_LC_CHK_RUNQ_LOCK(RQ, L) \
do { \
if ((L)) \
ERTS_LC_ASSERT(erts_lc_runq_is_locked((RQ))); \
else \
ERTS_LC_ASSERT(!erts_lc_runq_is_locked((RQ))); \
} while (0)
#else
#define ERTS_LC_CHK_RUNQ_LOCK(RQ, L)
#endif
void *erts_psd_set_init(Process *p, int ix, void *data);
ERTS_GLB_INLINE void *
erts_psd_get(Process *p, int ix);
ERTS_GLB_INLINE void *
erts_psd_set(Process *p, int ix, void *new);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void *
erts_psd_get(Process *p, int ix)
{
ErtsPSD *psd;
#if defined(ERTS_ENABLE_LOCK_CHECK)
ErtsProcLocks locks = erts_proc_lc_my_proc_locks(p);
if (ERTS_LC_PSD_ANY_LOCK == erts_psd_required_locks[ix].get_locks)
ERTS_LC_ASSERT(locks || erts_thr_progress_is_blocking());
else {
locks &= erts_psd_required_locks[ix].get_locks;
ERTS_LC_ASSERT(erts_psd_required_locks[ix].get_locks == locks
|| erts_thr_progress_is_blocking());
}
#endif
psd = (ErtsPSD *) erts_atomic_read_nob(&p->psd);
ASSERT(0 <= ix && ix < ERTS_PSD_SIZE);
if (!psd)
return NULL;
ERTS_THR_DATA_DEPENDENCY_READ_MEMORY_BARRIER;
return psd->data[ix];
}
ERTS_GLB_INLINE void *
erts_psd_set(Process *p, int ix, void *data)
{
ErtsPSD *psd;
#if defined(ERTS_ENABLE_LOCK_CHECK)
ErtsProcLocks locks = erts_proc_lc_my_proc_locks(p);
erts_aint32_t state = state = erts_atomic32_read_nob(&p->state);
if (!(state & ERTS_PSFLG_FREE)) {
if (ERTS_LC_PSD_ANY_LOCK == erts_psd_required_locks[ix].set_locks)
ERTS_LC_ASSERT(locks || erts_thr_progress_is_blocking());
else {
locks &= erts_psd_required_locks[ix].set_locks;
ERTS_LC_ASSERT(erts_psd_required_locks[ix].set_locks == locks
|| erts_thr_progress_is_blocking());
}
}
#endif
psd = (ErtsPSD *) erts_atomic_read_nob(&p->psd);
ASSERT(0 <= ix && ix < ERTS_PSD_SIZE);
if (psd) {
void *old;
#ifdef ETHR_ORDERED_READ_DEPEND
ETHR_MEMBAR(ETHR_LoadStore|ETHR_StoreStore);
#else
ETHR_MEMBAR(ETHR_LoadLoad|ETHR_LoadStore|ETHR_StoreStore);
#endif
old = psd->data[ix];
psd->data[ix] = data;
return old;
}
if (!data)
return NULL;
return erts_psd_set_init(p, ix, data);
}
#endif
#define ERTS_PROC_SCHED_ID(P, ID) \
((UWord) erts_psd_set((P), ERTS_PSD_SCHED_ID, (void *) (ID)))
#define ERTS_PROC_GET_SAVED_CALLS_BUF(P) \
((struct saved_calls *) erts_psd_get((P), ERTS_PSD_SAVED_CALLS_BUF))
#define ERTS_PROC_SET_SAVED_CALLS_BUF(P, SCB) \
((struct saved_calls *) erts_psd_set((P), ERTS_PSD_SAVED_CALLS_BUF, (void *) (SCB)))
#define ERTS_PROC_GET_CALL_TIME(P) \
((process_breakpoint_time_t *) erts_psd_get((P), ERTS_PSD_CALL_TIME_BP))
#define ERTS_PROC_SET_CALL_TIME(P, PBT) \
((process_breakpoint_time_t *) erts_psd_set((P), ERTS_PSD_CALL_TIME_BP, (void *) (PBT)))
#define ERTS_PROC_GET_DELAYED_GC_TASK_QS(P) \
((ErtsProcSysTaskQs *) erts_psd_get((P), ERTS_PSD_DELAYED_GC_TASK_QS))
#define ERTS_PROC_SET_DELAYED_GC_TASK_QS(P, PBT) \
((ErtsProcSysTaskQs *) erts_psd_set((P), ERTS_PSD_DELAYED_GC_TASK_QS, (void *) (PBT)))
#define ERTS_PROC_GET_NIF_TRAP_EXPORT(P) \
erts_psd_get((P), ERTS_PSD_NIF_TRAP_EXPORT)
#define ERTS_PROC_SET_NIF_TRAP_EXPORT(P, NTE) \
erts_psd_set((P), ERTS_PSD_NIF_TRAP_EXPORT, (void *) (NTE))
#define ERTS_PROC_GET_DIST_ENTRY(P) \
((DistEntry *) erts_psd_get((P), ERTS_PSD_DIST_ENTRY))
#define ERTS_PROC_SET_DIST_ENTRY(P, DE) \
((DistEntry *) erts_psd_set((P), ERTS_PSD_DIST_ENTRY, (void *) (DE)))
#define ERTS_PROC_GET_PENDING_SUSPEND(P) \
((void *) erts_psd_get((P), ERTS_PSD_PENDING_SUSPEND))
#define ERTS_PROC_SET_PENDING_SUSPEND(P, PS) \
((void *) erts_psd_set((P), ERTS_PSD_PENDING_SUSPEND, (void *) (PS)))
#ifdef HIPE
#define ERTS_PROC_GET_SUSPENDED_SAVED_CALLS_BUF(P) \
((struct saved_calls *) erts_psd_get((P), ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF))
#define ERTS_PROC_SET_SUSPENDED_SAVED_CALLS_BUF(P, SCB) \
((struct saved_calls *) erts_psd_set((P), ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF, (void *) (SCB)))
#endif
ERTS_GLB_INLINE Eterm erts_proc_get_error_handler(Process *p);
ERTS_GLB_INLINE Eterm erts_proc_set_error_handler(Process *p, Eterm handler);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE Eterm
erts_proc_get_error_handler(Process *p)
{
void *val = erts_psd_get(p, ERTS_PSD_ERROR_HANDLER);
if (!val)
return am_error_handler;
else {
ASSERT(is_atom(((Eterm) (UWord) val)));
return (Eterm) (UWord) val;
}
}
ERTS_GLB_INLINE Eterm
erts_proc_set_error_handler(Process *p, Eterm handler)
{
void *old_val;
void *new_val;
ASSERT(is_atom(handler));
new_val = (handler == am_error_handler) ? NULL : (void *) (UWord) handler;
old_val = erts_psd_set(p, ERTS_PSD_ERROR_HANDLER, new_val);
if (!old_val)
return am_error_handler;
else {
ASSERT(is_atom(((Eterm) (UWord) old_val)));
return (Eterm) (UWord) old_val;
}
}
#endif
#ifdef ERTS_INCLUDE_SCHEDULER_INTERNALS
#include "erl_thr_progress.h"
extern erts_atomic_t erts_migration_paths;
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
int erts_get_sched_util(ErtsRunQueue *rq,
int initially_locked,
int short_interval);
#endif
ERTS_GLB_INLINE ErtsMigrationPaths *erts_get_migration_paths_managed(void);
ERTS_GLB_INLINE ErtsMigrationPaths *erts_get_migration_paths(void);
ERTS_GLB_INLINE ErtsRunQueue *erts_check_emigration_need(ErtsRunQueue *c_rq,
int prio);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE ErtsMigrationPaths *
erts_get_migration_paths_managed(void)
{
return (ErtsMigrationPaths *) erts_atomic_read_ddrb(&erts_migration_paths);
}
ERTS_GLB_INLINE ErtsMigrationPaths *
erts_get_migration_paths(void)
{
if (erts_thr_progress_is_managed_thread())
return erts_get_migration_paths_managed();
else
return NULL;
}
ERTS_GLB_INLINE ErtsRunQueue *
erts_check_emigration_need(ErtsRunQueue *c_rq, int prio)
{
ErtsMigrationPaths *mps = erts_get_migration_paths();
ErtsMigrationPath *mp;
Uint32 flags;
if (!mps)
return NULL;
mp = &mps->mpath[c_rq->ix];
flags = mp->flags;
if (ERTS_CHK_RUNQ_FLG_EMIGRATE(flags, prio)) {
int len;
if (ERTS_CHK_RUNQ_FLG_EVACUATE(flags, prio)) {
/* force emigration */
return mp->prio[prio].runq;
}
if (flags & ERTS_RUNQ_FLG_INACTIVE) {
/*
* Run queue was inactive at last balance. Verify that
* it still is before forcing emigration.
*/
if (ERTS_RUNQ_FLGS_GET(c_rq) & ERTS_RUNQ_FLG_INACTIVE)
return mp->prio[prio].runq;
}
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
if (mp->sched_util) {
ErtsRunQueue *rq = mp->prio[prio].runq;
/* No migration if other is non-empty */
if (!(ERTS_RUNQ_FLGS_GET(rq) & ERTS_RUNQ_FLG_NONEMPTY)
&& erts_get_sched_util(rq, 0, 1) < mp->prio[prio].limit.other
&& erts_get_sched_util(c_rq, 0, 1) > mp->prio[prio].limit.this) {
return rq;
}
}
else
#endif
{
if (prio == ERTS_PORT_PRIO_LEVEL)
len = RUNQ_READ_LEN(&c_rq->ports.info.len);
else
len = RUNQ_READ_LEN(&c_rq->procs.prio_info[prio].len);
if (len > mp->prio[prio].limit.this) {
ErtsRunQueue *n_rq = mp->prio[prio].runq;
if (n_rq) {
if (prio == ERTS_PORT_PRIO_LEVEL)
len = RUNQ_READ_LEN(&n_rq->ports.info.len);
else
len = RUNQ_READ_LEN(&n_rq->procs.prio_info[prio].len);
if (len < mp->prio[prio].limit.other)
return n_rq;
}
}
}
}
return NULL;
}
#endif
#endif
ERTS_GLB_INLINE ErtsSchedulerData *erts_proc_sched_data(Process *c_p);
ERTS_GLB_INLINE int erts_is_scheduler_bound(ErtsSchedulerData *esdp);
ERTS_GLB_INLINE Process *erts_get_current_process(void);
ERTS_GLB_INLINE Eterm erts_get_current_pid(void);
ERTS_GLB_INLINE Uint erts_get_scheduler_id(void);
ERTS_GLB_INLINE void erts_init_runq_proc(Process *p, ErtsRunQueue *rq, int bnd);
ERTS_GLB_INLINE ErtsRunQueue *erts_set_runq_proc(Process *p, ErtsRunQueue *rq, int *boundp);
ERTS_GLB_INLINE int erts_try_change_runq_proc(Process *p, ErtsRunQueue *rq);
ERTS_GLB_INLINE ErtsRunQueue *erts_bind_runq_proc(Process *p, int bind);
ERTS_GLB_INLINE int erts_proc_runq_is_bound(Process *p);
ERTS_GLB_INLINE ErtsRunQueue *erts_get_runq_proc(Process *p, int *boundp);
ERTS_GLB_INLINE ErtsRunQueue *erts_get_runq_current(ErtsSchedulerData *esdp);
ERTS_GLB_INLINE void erts_runq_lock(ErtsRunQueue *rq);
ERTS_GLB_INLINE int erts_runq_trylock(ErtsRunQueue *rq);
ERTS_GLB_INLINE void erts_runq_unlock(ErtsRunQueue *rq);
ERTS_GLB_INLINE void erts_xrunq_lock(ErtsRunQueue *rq, ErtsRunQueue *xrq);
ERTS_GLB_INLINE void erts_xrunq_unlock(ErtsRunQueue *rq, ErtsRunQueue *xrq);
ERTS_GLB_INLINE void erts_runqs_lock(ErtsRunQueue *rq1, ErtsRunQueue *rq2);
ERTS_GLB_INLINE void erts_runqs_unlock(ErtsRunQueue *rq1, ErtsRunQueue *rq2);
ERTS_GLB_INLINE ErtsMessage *erts_alloc_message_heap_state(Process *pp,
erts_aint32_t *psp,
ErtsProcLocks *plp,
Uint sz,
Eterm **hpp,
ErlOffHeap **ohpp);
ERTS_GLB_INLINE ErtsMessage *erts_alloc_message_heap(Process *pp,
ErtsProcLocks *plp,
Uint sz,
Eterm **hpp,
ErlOffHeap **ohpp);
ERTS_GLB_INLINE void erts_shrink_message_heap(ErtsMessage **msgpp, Process *pp,
Eterm *start_hp, Eterm *used_hp, Eterm *end_hp,
Eterm *brefs, Uint brefs_size);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE
ErtsSchedulerData *erts_proc_sched_data(Process *c_p)
{
ErtsSchedulerData *esdp;
ASSERT(c_p);
esdp = c_p->scheduler_data;
if (esdp) {
ASSERT(esdp == erts_get_scheduler_data());
ASSERT(!ERTS_SCHEDULER_IS_DIRTY(esdp));
}
else {
esdp = erts_get_scheduler_data();
ASSERT(esdp);
ASSERT(ERTS_SCHEDULER_IS_DIRTY(esdp));
}
ASSERT(esdp);
return esdp;
}
ERTS_GLB_INLINE
int erts_is_scheduler_bound(ErtsSchedulerData *esdp)
{
if (!esdp)
esdp = erts_get_scheduler_data();
ASSERT(esdp);
return esdp->cpu_id >= 0;
}
ERTS_GLB_INLINE
Process *erts_get_current_process(void)
{
ErtsSchedulerData *esdp = erts_get_scheduler_data();
return esdp ? esdp->current_process : NULL;
}
ERTS_GLB_INLINE
Eterm erts_get_current_pid(void)
{
Process *proc = erts_get_current_process();
return proc ? proc->common.id : THE_NON_VALUE;
}
ERTS_GLB_INLINE
Uint erts_get_scheduler_id(void)
{
ErtsSchedulerData *esdp = erts_get_scheduler_data();
if (esdp && ERTS_SCHEDULER_IS_DIRTY(esdp))
return 0;
else
return esdp ? esdp->no : (Uint) 0;
}
/**
* Init run-queue of process.
*
* @param p[in,out] Process
* @param rq[in] Run-queue that process will be assigned to
* @param bnd[in,out] If non-zero binds process to run-queue.
*/
ERTS_GLB_INLINE void
erts_init_runq_proc(Process *p, ErtsRunQueue *rq, int bnd)
{
erts_aint_t rqint = (erts_aint_t) rq;
if (bnd)
rqint |= ERTS_RUNQ_BOUND_FLAG;
erts_atomic_init_nob(&p->run_queue, rqint);
}
/**
* Forcibly set run-queue of process.
*
* @param p[in,out] Process
* @param rq[in] Run-queue that process will be assigned to
* @param bndp[in,out] Pointer to integer. On input non-zero
* value causes the process to be bound to
* the run-queue. On output, indicating
* wether process previously was bound or
* not.
* @return Previous run-queue.
*/
ERTS_GLB_INLINE ErtsRunQueue *
erts_set_runq_proc(Process *p, ErtsRunQueue *rq, int *bndp)
{
erts_aint_t rqint = (erts_aint_t) rq;
ASSERT(bndp);
ASSERT(rq);
if (*bndp)
rqint |= ERTS_RUNQ_BOUND_FLAG;
rqint = erts_atomic_xchg_nob(&p->run_queue, rqint);
*bndp = (int) (rqint & ERTS_RUNQ_BOUND_FLAG);
return (ErtsRunQueue *) (rqint & ERTS_RUNQ_POINTER_MASK);
}
/**
* Try to change run-queue assignment of a process.
*
* @param p[in,out] Process
* @param rq[int] Run-queue that process will be assigned to
* @return Non-zero if the run-queue assignment was
* successfully changed.
*/
ERTS_GLB_INLINE int
erts_try_change_runq_proc(Process *p, ErtsRunQueue *rq)
{
erts_aint_t old_rqint, new_rqint;
ASSERT(rq);
new_rqint = (erts_aint_t) rq;
old_rqint = (erts_aint_t) erts_atomic_read_nob(&p->run_queue);
while (1) {
erts_aint_t act_rqint;
if (old_rqint & ERTS_RUNQ_BOUND_FLAG)
return 0;
act_rqint = erts_atomic_cmpxchg_nob(&p->run_queue,
new_rqint,
old_rqint);
if (act_rqint == old_rqint)
return !0;
}
}
/**
*
* Bind or unbind process to/from currently used run-queue.
*
* @param p Process
* @param bind Bind if non-zero; otherwise unbind
* @return Pointer to previously bound run-queue,
* or NULL if previously unbound
*/
ERTS_GLB_INLINE ErtsRunQueue *
erts_bind_runq_proc(Process *p, int bind)
{
erts_aint_t rqint;
if (bind)
rqint = erts_atomic_read_bor_nob(&p->run_queue,
ERTS_RUNQ_BOUND_FLAG);
else
rqint = erts_atomic_read_band_nob(&p->run_queue,
~ERTS_RUNQ_BOUND_FLAG);
if (rqint & ERTS_RUNQ_BOUND_FLAG)
return (ErtsRunQueue *) (rqint & ERTS_RUNQ_POINTER_MASK);
else
return NULL;
}
/**
* Determine wether a process is bound to a run-queue or not.
*
* @return Returns a non-zero value if bound,
* and zero of not bound.
*/
ERTS_GLB_INLINE int
erts_proc_runq_is_bound(Process *p)
{
erts_aint_t rqint = erts_atomic_read_nob(&p->run_queue);
return (int) (rqint & ERTS_RUNQ_BOUND_FLAG);
}
/**
* Set run-queue of process.
*
* @param p[in,out] Process
* @param bndp[out] Pointer to integer. If non-NULL pointer,
* the integer will be set to a non-zero
* value if the process is bound to the
* run-queue.
* @return Pointer to the normal run-queue that
* the process currently is assigend to.
* A process is always assigned to a
* normal run-queue.
*/
ERTS_GLB_INLINE ErtsRunQueue *
erts_get_runq_proc(Process *p, int *bndp)
{
erts_aint_t rqint = erts_atomic_read_nob(&p->run_queue);
ErtsRunQueue *rq;
if (bndp)
*bndp = (int) (rqint & ERTS_RUNQ_BOUND_FLAG);
rqint &= ERTS_RUNQ_POINTER_MASK;
rq = (ErtsRunQueue *) rqint;
ASSERT(rq);
return rq;
}
ERTS_GLB_INLINE ErtsRunQueue *
erts_get_runq_current(ErtsSchedulerData *esdp)
{
ASSERT(!esdp || esdp == erts_get_scheduler_data());
if (!esdp)
esdp = erts_get_scheduler_data();
return esdp->run_queue;
}
ERTS_GLB_INLINE void
erts_runq_lock(ErtsRunQueue *rq)
{
erts_mtx_lock(&rq->mtx);
}
ERTS_GLB_INLINE int
erts_runq_trylock(ErtsRunQueue *rq)
{
return erts_mtx_trylock(&rq->mtx);
}
ERTS_GLB_INLINE void
erts_runq_unlock(ErtsRunQueue *rq)
{
erts_mtx_unlock(&rq->mtx);
}
ERTS_GLB_INLINE void
erts_xrunq_lock(ErtsRunQueue *rq, ErtsRunQueue *xrq)
{
ERTS_LC_ASSERT(erts_lc_mtx_is_locked(&rq->mtx));
if (xrq != rq) {
if (erts_mtx_trylock(&xrq->mtx) == EBUSY) {
if (rq < xrq)
erts_mtx_lock(&xrq->mtx);
else {
erts_mtx_unlock(&rq->mtx);
erts_mtx_lock(&xrq->mtx);
erts_mtx_lock(&rq->mtx);
}
}
}
}
ERTS_GLB_INLINE void
erts_xrunq_unlock(ErtsRunQueue *rq, ErtsRunQueue *xrq)
{
if (xrq != rq)
erts_mtx_unlock(&xrq->mtx);
}
ERTS_GLB_INLINE void
erts_runqs_lock(ErtsRunQueue *rq1, ErtsRunQueue *rq2)
{
ASSERT(rq1 && rq2);
if (rq1 == rq2)
erts_mtx_lock(&rq1->mtx);
else if (rq1 < rq2) {
erts_mtx_lock(&rq1->mtx);
erts_mtx_lock(&rq2->mtx);
}
else {
erts_mtx_lock(&rq2->mtx);
erts_mtx_lock(&rq1->mtx);
}
}
ERTS_GLB_INLINE void
erts_runqs_unlock(ErtsRunQueue *rq1, ErtsRunQueue *rq2)
{
ASSERT(rq1 && rq2);
erts_mtx_unlock(&rq1->mtx);
if (rq1 != rq2)
erts_mtx_unlock(&rq2->mtx);
}
ERTS_GLB_INLINE ErtsMessage *
erts_alloc_message_heap_state(Process *pp,
erts_aint32_t *psp,
ErtsProcLocks *plp,
Uint sz,
Eterm **hpp,
ErlOffHeap **ohpp)
{
int on_heap;
ErtsMessage *mp;
if ((*psp) & ERTS_PSFLG_OFF_HEAP_MSGQ) {
mp = erts_alloc_message(sz, hpp);
*ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
return mp;
}
mp = erts_try_alloc_message_on_heap(pp, psp, plp, sz, hpp, ohpp, &on_heap);
ASSERT(pp || !on_heap);
return mp;
}
ERTS_GLB_INLINE ErtsMessage *
erts_alloc_message_heap(Process *pp,
ErtsProcLocks *plp,
Uint sz,
Eterm **hpp,
ErlOffHeap **ohpp)
{
erts_aint32_t state = pp ? erts_atomic32_read_nob(&pp->state) : 0;
return erts_alloc_message_heap_state(pp, &state, plp, sz, hpp, ohpp);
}
ERTS_GLB_INLINE void
erts_shrink_message_heap(ErtsMessage **msgpp, Process *pp,
Eterm *start_hp, Eterm *used_hp, Eterm *end_hp,
Eterm *brefs, Uint brefs_size)
{
ASSERT(start_hp <= used_hp && used_hp <= end_hp);
if ((*msgpp)->data.attached == ERTS_MSG_COMBINED_HFRAG)
*msgpp = erts_shrink_message(*msgpp, used_hp - start_hp,
brefs, brefs_size);
else if (!(*msgpp)->data.attached) {
ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN
& erts_proc_lc_my_proc_locks(pp));
HRelease(pp, end_hp, used_hp);
}
else {
ErlHeapFragment *hfrag = (*msgpp)->data.heap_frag;
if (start_hp != used_hp)
hfrag = erts_resize_message_buffer(hfrag, used_hp - start_hp,
brefs, brefs_size);
else {
free_message_buffer(hfrag);
hfrag = NULL;
}
(*msgpp)->data.heap_frag = hfrag;
}
}
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
ERTS_GLB_INLINE ErtsAtomCacheMap *erts_get_atom_cache_map(Process *c_p);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE ErtsAtomCacheMap *
erts_get_atom_cache_map(Process *c_p)
{
ErtsSchedulerData *esdp = (c_p
? erts_proc_sched_data(c_p)
: erts_get_scheduler_data());
ASSERT(esdp);
return &esdp->atom_cache_map;
}
#endif
#ifdef __WIN32__
/*
* Don't want erts_time2reds() inlined in beam_emu.c on windows since
* it is compiled with gcc which fails on it. Implementation is in
* erl_process.c on windows.
*/
# define ERTS_TIME2REDS_IMPL__ erts_time2reds__
#else
# define ERTS_TIME2REDS_IMPL__ erts_time2reds
#endif
ERTS_GLB_INLINE Sint64 ERTS_TIME2REDS_IMPL__(ErtsMonotonicTime start,
ErtsMonotonicTime end);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE Sint64
ERTS_TIME2REDS_IMPL__(ErtsMonotonicTime start, ErtsMonotonicTime end)
{
ErtsMonotonicTime time = end - start;
ASSERT(time >= 0);
time = ERTS_MONOTONIC_TO_USEC(time);
if (time == 0)
return (Sint64) 1; /* At least one reduction */
/* Currently two reductions per micro second */
time *= (CONTEXT_REDS-1)/1000 + 1;
return (Sint64) time;
}
#endif
Process *erts_try_lock_sig_free_proc(Eterm pid,
ErtsProcLocks locks,
erts_aint32_t *statep);
#ifdef DEBUG
#define ERTS_ASSERT_IS_NOT_EXITING(P) \
do { ASSERT(!ERTS_PROC_IS_EXITING((P))); } while (0)
#else
#define ERTS_ASSERT_IS_NOT_EXITING(P)
#endif
#define ERTS_PROC_IS_EXITING(P) \
(ERTS_PSFLG_EXITING & erts_atomic32_read_acqb(&(P)->state))
/* Minimum NUMBER of processes for a small system to start */
#define ERTS_MIN_PROCESSES 1024
#if ERTS_MIN_PROCESSES < ERTS_NO_OF_PIX_LOCKS
#undef ERTS_MIN_PROCESSES
#define ERTS_MIN_PROCESSES ERTS_NO_OF_PIX_LOCKS
#endif
void erts_notify_inc_runq(ErtsRunQueue *runq);
void erts_sched_finish_poke(ErtsSchedulerSleepInfo *, erts_aint32_t);
ERTS_GLB_INLINE void erts_sched_poke(ErtsSchedulerSleepInfo *ssi);
void erts_aux_thread_poke(void);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void
erts_sched_poke(ErtsSchedulerSleepInfo *ssi)
{
erts_aint32_t flags;
ERTS_THR_MEMORY_BARRIER;
flags = erts_atomic32_read_nob(&ssi->flags);
if (flags & ERTS_SSI_FLG_SLEEPING) {
flags = erts_atomic32_read_band_nob(&ssi->flags, ~ERTS_SSI_FLGS_SLEEP);
erts_sched_finish_poke(ssi, flags);
}
}
#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */
#include "erl_process_lock.h"
#undef ERTS_INCLUDE_SCHEDULER_INTERNALS
#endif
void erts_halt(int code);
extern erts_atomic32_t erts_halt_progress;
extern int erts_halt_code;
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