/* * %CopyrightBegin% * * Copyright Ericsson AB 1996-2014. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in * compliance with the License. You should have received a copy of the * Erlang Public License along with this software. If not, it can be * retrieved online at http://www.erlang.org/. * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See * the License for the specific language governing rights and limitations * under the License. * * %CopyrightEnd% */ #ifndef __GLOBAL_H__ #define __GLOBAL_H__ #include "sys.h" #include /* offsetof() */ #include "erl_alloc.h" #include "erl_vm.h" #include "erl_node_container_utils.h" #include "hash.h" #include "index.h" #include "atom.h" #include "code_ix.h" #include "export.h" #include "module.h" #include "register.h" #include "erl_fun.h" #include "erl_node_tables.h" #include "benchmark.h" #include "erl_process.h" #include "erl_sys_driver.h" #include "erl_debug.h" #include "error.h" #include "erl_utils.h" #include "erl_port.h" #include "erl_gc.h" struct enif_environment_t /* ErlNifEnv */ { struct erl_module_nif* mod_nif; Process* proc; Eterm* hp; Eterm* hp_end; ErlHeapFragment* heap_frag; int fpe_was_unmasked; struct enif_tmp_obj_t* tmp_obj_list; int exception_thrown; /* boolean */ }; extern void erts_pre_nif(struct enif_environment_t*, Process*, struct erl_module_nif*); extern void erts_post_nif(struct enif_environment_t* env); extern Eterm erts_nif_taints(Process* p); extern void erts_print_nif_taints(int to, void* to_arg); void erts_unload_nif(struct erl_module_nif* nif); extern void erl_nif_init(void); /* Driver handle (wrapper for old plain handle) */ #define ERL_DE_OK 0 #define ERL_DE_UNLOAD 1 #define ERL_DE_FORCE_UNLOAD 2 #define ERL_DE_RELOAD 3 #define ERL_DE_FORCE_RELOAD 4 #define ERL_DE_PERMANENT 5 #define ERL_DE_PROC_LOADED 0 #define ERL_DE_PROC_AWAIT_UNLOAD 1 #define ERL_DE_PROC_AWAIT_UNLOAD_ONLY 2 #define ERL_DE_PROC_AWAIT_LOAD 3 /* Flags for process entries */ #define ERL_DE_FL_DEREFERENCED 1 /* Flags for drivers, put locking policy here /PaN */ #define ERL_DE_FL_KILL_PORTS 1 #define ERL_FL_CONSISTENT_MASK ( ERL_DE_FL_KILL_PORTS ) /* System specific load errors are returned as positive values */ #define ERL_DE_NO_ERROR 0 #define ERL_DE_LOAD_ERROR_NO_INIT -1 #define ERL_DE_LOAD_ERROR_FAILED_INIT -2 #define ERL_DE_LOAD_ERROR_BAD_NAME -3 #define ERL_DE_LOAD_ERROR_NAME_TO_LONG -4 #define ERL_DE_LOAD_ERROR_INCORRECT_VERSION -5 #define ERL_DE_ERROR_NO_DDLL_FUNCTIONALITY -6 #define ERL_DE_ERROR_UNSPECIFIED -7 #define ERL_DE_LOOKUP_ERROR_NOT_FOUND -8 #define ERL_DE_DYNAMIC_ERROR_OFFSET -10 typedef struct de_proc_entry { Process *proc; /* The process... */ Uint awaiting_status; /* PROC_LOADED == Have loaded the driver PROC_AWAIT_UNLOAD == Wants to be notified when we have unloaded the driver (was locked) PROC_AWAIT_LOAD == Wants to be notified when we reloaded the driver (old was locked) */ Uint flags; /* ERL_FL_DE_DEREFERENCED when reload in progress */ Eterm heap[REF_THING_SIZE]; /* "ref heap" */ struct de_proc_entry *next; } DE_ProcEntry; typedef struct { void *handle; /* Handle for DLL or SO (for dyn. drivers). */ DE_ProcEntry *procs; /* List of pids that have loaded this driver, or that wait for it to change state */ erts_refc_t refc; /* Number of ports/processes having references to the driver */ erts_smp_atomic32_t port_count; /* Number of ports using the driver */ Uint flags; /* ERL_DE_FL_KILL_PORTS */ int status; /* ERL_DE_xxx */ char *full_path; /* Full path of the driver */ char *reload_full_path; /* If status == ERL_DE_RELOAD, this contains full name of driver (path) */ char *reload_driver_name; /* ... and this contains the driver name */ Uint reload_flags; /* flags for reloaded driver */ } DE_Handle; /* * This structure represents a link to the next driver. */ struct erts_driver_t_ { erts_driver_t *next; erts_driver_t *prev; char *name; struct { int major; int minor; } version; int flags; DE_Handle *handle; #ifdef ERTS_SMP erts_smp_mtx_t *lock; #endif ErlDrvEntry *entry; ErlDrvData (*start)(ErlDrvPort port, char *command, SysDriverOpts* opts); void (*stop)(ErlDrvData drv_data); void (*finish)(void); void (*flush)(ErlDrvData drv_data); void (*output)(ErlDrvData drv_data, char *buf, ErlDrvSizeT len); void (*outputv)(ErlDrvData drv_data, ErlIOVec *ev); /* Might be NULL */ ErlDrvSSizeT (*control)(ErlDrvData drv_data, unsigned int command, char *buf, ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen); /* Might be NULL */ ErlDrvSSizeT (*call)(ErlDrvData drv_data, unsigned int command, char *buf, ErlDrvSizeT len, char **rbuf, ErlDrvSizeT rlen, /* Might be NULL */ unsigned int *flags); void (*event)(ErlDrvData drv_data, ErlDrvEvent event, ErlDrvEventData event_data); void (*ready_input)(ErlDrvData drv_data, ErlDrvEvent event); void (*ready_output)(ErlDrvData drv_data, ErlDrvEvent event); void (*timeout)(ErlDrvData drv_data); void (*ready_async)(ErlDrvData drv_data, ErlDrvThreadData thread_data); /* Might be NULL */ void (*process_exit)(ErlDrvData drv_data, ErlDrvMonitor *monitor); void (*stop_select)(ErlDrvEvent event, void*); /* Might be NULL */ void (*emergency_close)(ErlDrvData drv_data); /* Might be NULL */ }; extern erts_driver_t *driver_list; extern erts_smp_rwmtx_t erts_driver_list_lock; extern void erts_ddll_init(void); extern void erts_ddll_lock_driver(DE_Handle *dh, char *name); /* These are for bookkeeping */ extern void erts_ddll_increment_port_count(DE_Handle *dh); extern void erts_ddll_decrement_port_count(DE_Handle *dh); /* These makes things happen, drivers may be scheduled for unload etc */ extern void erts_ddll_reference_driver(DE_Handle *dh); extern void erts_ddll_reference_referenced_driver(DE_Handle *dh); extern void erts_ddll_dereference_driver(DE_Handle *dh); extern char *erts_ddll_error(int code); extern void erts_ddll_proc_dead(Process *p, ErtsProcLocks plocks); extern int erts_ddll_driver_ok(DE_Handle *dh); extern void erts_ddll_remove_monitor(Process *p, Eterm ref, ErtsProcLocks plocks); extern Eterm erts_ddll_monitor_driver(Process *p, Eterm description, ErtsProcLocks plocks); /* ** Just like the driver binary but with initial flags ** Note that the two structures Binary and ErlDrvBinary HAVE to ** be equal except for extra fields in the beginning of the struct. ** ErlDrvBinary is defined in erl_driver.h. ** When driver_alloc_binary is called, a Binary is allocated, but ** the pointer returned is to the address of the first element that ** also occurs in the ErlDrvBinary struct (driver.*binary takes care if this). ** The driver need never know about additions to the internal Binary of the ** emulator. One should however NEVER be sloppy when mixing ErlDrvBinary ** and Binary, the macros below can convert one type to the other, as they both ** in reality are equal. */ #ifdef ARCH_32 /* *DO NOT USE* only for alignment. */ #define ERTS_BINARY_STRUCT_ALIGNMENT Uint32 align__; #else #define ERTS_BINARY_STRUCT_ALIGNMENT #endif /* Add fields in ERTS_INTERNAL_BINARY_FIELDS, otherwise the drivers crash */ #define ERTS_INTERNAL_BINARY_FIELDS \ UWord flags; \ erts_refc_t refc; \ ERTS_BINARY_STRUCT_ALIGNMENT typedef struct binary { ERTS_INTERNAL_BINARY_FIELDS SWord orig_size; char orig_bytes[1]; /* to be continued */ } Binary; #define ERTS_SIZEOF_Binary(Sz) \ (offsetof(Binary,orig_bytes) + (Sz)) typedef struct { ERTS_INTERNAL_BINARY_FIELDS SWord orig_size; void (*destructor)(Binary *); union { struct { ERTS_BINARY_STRUCT_ALIGNMENT char data[1]; } aligned; struct { char data[1]; } unaligned; } u; } ErtsMagicBinary; #ifdef ARCH_32 #define ERTS_MAGIC_BIN_BYTES_TO_ALIGN 4 #else #define ERTS_MAGIC_BIN_BYTES_TO_ALIGN 0 #endif typedef union { Binary binary; ErtsMagicBinary magic_binary; struct { ERTS_INTERNAL_BINARY_FIELDS ErlDrvBinary binary; } driver; } ErtsBinary; /* * 'Binary' alignment: * Address of orig_bytes[0] of a Binary should always be 8-byte aligned. * It is assumed that the flags, refc, and orig_size fields are 4 bytes on * 32-bits architectures and 8 bytes on 64-bits architectures. */ #define ERTS_MAGIC_BIN_DESTRUCTOR(BP) \ ((ErtsBinary *) (BP))->magic_binary.destructor #define ERTS_MAGIC_BIN_DATA(BP) \ ((void *) ((ErtsBinary *) (BP))->magic_binary.u.aligned.data) #define ERTS_MAGIC_DATA_OFFSET \ (offsetof(ErtsMagicBinary,u.aligned.data) - offsetof(Binary,orig_bytes)) #define ERTS_MAGIC_BIN_ORIG_SIZE(Sz) \ (ERTS_MAGIC_DATA_OFFSET + (Sz)) #define ERTS_MAGIC_BIN_SIZE(Sz) \ (offsetof(ErtsMagicBinary,u.aligned.data) + (Sz)) /* On 32-bit arch these macro variants will save memory by not forcing 8-byte alignment for the magic payload. */ #define ERTS_MAGIC_BIN_UNALIGNED_DATA(BP) \ ((void *) ((ErtsBinary *) (BP))->magic_binary.u.unaligned.data) #define ERTS_MAGIC_UNALIGNED_DATA_OFFSET \ (offsetof(ErtsMagicBinary,u.unaligned.data) - offsetof(Binary,orig_bytes)) #define ERTS_MAGIC_BIN_UNALIGNED_DATA_SIZE(BP) \ ((BP)->orig_size - ERTS_MAGIC_UNALIGNED_DATA_OFFSET) #define ERTS_MAGIC_BIN_UNALIGNED_ORIG_SIZE(Sz) \ (ERTS_MAGIC_UNALIGNED_DATA_OFFSET + (Sz)) #define ERTS_MAGIC_BIN_UNALIGNED_SIZE(Sz) \ (offsetof(ErtsMagicBinary,u.unaligned.data) + (Sz)) #define ERTS_MAGIC_BIN_FROM_UNALIGNED_DATA(DATA) \ ((ErtsBinary*)((char*)(DATA) - offsetof(ErtsMagicBinary,u.unaligned.data))) #define Binary2ErlDrvBinary(B) (&((ErtsBinary *) (B))->driver.binary) #define ErlDrvBinary2Binary(D) ((Binary *) \ (((char *) (D)) \ - offsetof(ErtsBinary, driver.binary))) /* A "magic" binary flag */ #define BIN_FLAG_MAGIC 1 #define BIN_FLAG_USR1 2 /* Reserved for use by different modules too mark */ #define BIN_FLAG_USR2 4 /* certain binaries as special (used by ets) */ #define BIN_FLAG_DRV 8 /* * This structure represents one type of a binary in a process. */ typedef struct proc_bin { Eterm thing_word; /* Subtag REFC_BINARY_SUBTAG. */ Uint size; /* Binary size in bytes. */ #if HALFWORD_HEAP void* dummy_ptr_padding__; #endif struct erl_off_heap_header *next; Binary *val; /* Pointer to Binary structure. */ byte *bytes; /* Pointer to the actual data bytes. */ Uint flags; /* Flag word. */ } ProcBin; #define PB_IS_WRITABLE 1 /* Writable (only one reference to ProcBin) */ #define PB_ACTIVE_WRITER 2 /* There is an active writer */ /* * ProcBin size in Eterm words. */ #define PROC_BIN_SIZE (sizeof(ProcBin)/sizeof(Eterm)) ERTS_GLB_INLINE Eterm erts_mk_magic_binary_term(Eterm **hpp, ErlOffHeap *ohp, Binary *mbp); #if ERTS_GLB_INLINE_INCL_FUNC_DEF ERTS_GLB_INLINE Eterm erts_mk_magic_binary_term(Eterm **hpp, ErlOffHeap *ohp, Binary *mbp) { ProcBin *pb = (ProcBin *) *hpp; *hpp += PROC_BIN_SIZE; ASSERT(mbp->flags & BIN_FLAG_MAGIC); pb->thing_word = HEADER_PROC_BIN; pb->size = 0; pb->next = ohp->first; ohp->first = (struct erl_off_heap_header*) pb; pb->val = mbp; pb->bytes = (byte *) mbp->orig_bytes; pb->flags = 0; erts_refc_inc(&mbp->refc, 1); return make_binary(pb); } #endif #define ERTS_TERM_IS_MAGIC_BINARY(T) \ (is_binary((T)) \ && (thing_subtag(*binary_val((T))) == REFC_BINARY_SUBTAG) \ && (((ProcBin *) binary_val((T)))->val->flags & BIN_FLAG_MAGIC)) union erl_off_heap_ptr { struct erl_off_heap_header* hdr; ProcBin *pb; struct erl_fun_thing* fun; struct external_thing_* ext; Eterm* ep; void* voidp; }; /* controls warning mapping in error_logger */ extern Eterm node_cookie; extern Uint display_items; /* no of items to display in traces etc */ extern int erts_backtrace_depth; extern erts_smp_atomic32_t erts_max_gen_gcs; extern int bif_reductions; /* reductions + fcalls (when doing call_bif) */ extern int stackdump_on_exit; /* * Here is an implementation of a lightweiht stack. * * Use it like this: * * DECLARE_ESTACK(Stack) (At the start of a block) * ... * ESTACK_PUSH(Stack, Term) * ... * if (ESTACK_ISEMPTY(Stack)) { * Stack is empty * } else { * Term = ESTACK_POP(Stack); * Process popped Term here * } * ... * DESTROY_ESTACK(Stack) */ typedef struct ErtsEStack_ { Eterm* start; Eterm* sp; Eterm* end; Eterm* edefault; ErtsAlcType_t alloc_type; }ErtsEStack; #define DEF_ESTACK_SIZE (16) void erl_grow_estack(ErtsEStack*, Uint need); #define ESTK_CONCAT(a,b) a##b #define ESTK_DEF_STACK(s) ESTK_CONCAT(s,_default_estack) #define DECLARE_ESTACK(s) \ Eterm ESTK_DEF_STACK(s)[DEF_ESTACK_SIZE]; \ ErtsEStack s = { \ ESTK_DEF_STACK(s), /* start */ \ ESTK_DEF_STACK(s), /* sp */ \ ESTK_DEF_STACK(s) + DEF_ESTACK_SIZE, /* end */ \ ESTK_DEF_STACK(s), /* default */ \ ERTS_ALC_T_ESTACK /* alloc_type */ \ } #define ESTACK_CHANGE_ALLOCATOR(s,t) \ do { \ if ((s).start != ESTK_DEF_STACK(s)) { \ erl_exit(1, "Internal error - trying to change allocator " \ "type of active estack\n"); \ } \ (s).alloc_type = (t); \ } while (0) #define DESTROY_ESTACK(s) \ do { \ if ((s).start != ESTK_DEF_STACK(s)) { \ erts_free((s).alloc_type, (s).start); \ } \ } while(0) /* * Do not free the stack after this, it may have pointers into what * was saved in 'dst'. */ #define ESTACK_SAVE(s,dst)\ do {\ if ((s).start == ESTK_DEF_STACK(s)) {\ UWord _wsz = ESTACK_COUNT(s);\ (dst)->start = erts_alloc((s).alloc_type,\ DEF_ESTACK_SIZE * sizeof(Eterm));\ memcpy((dst)->start, (s).start,_wsz*sizeof(Eterm));\ (dst)->sp = (dst)->start + _wsz;\ (dst)->end = (dst)->start + DEF_ESTACK_SIZE;\ (dst)->edefault = NULL;\ (dst)->alloc_type = (s).alloc_type;\ } else\ *(dst) = (s);\ } while (0) #define DESTROY_SAVED_ESTACK(estack)\ do {\ if ((estack)->start) {\ erts_free((estack)->alloc_type, (estack)->start);\ (estack)->start = NULL;\ }\ } while(0) #define CLEAR_SAVED_ESTACK(estack) ((void) ((estack)->start = NULL)) /* * Use on empty stack, only the allocator can be changed before this. * The src stack is reset to NULL. */ #define ESTACK_RESTORE(s, src) \ do { \ ASSERT((s).start == ESTK_DEF_STACK(s)); \ (s) = *(src); /* struct copy */ \ (src)->start = NULL; \ ASSERT((s).sp >= (s).start); \ ASSERT((s).sp <= (s).end); \ } while (0) #define ESTACK_IS_STATIC(s) ((s).start == ESTK_DEF_STACK(s)) #define ESTACK_PUSH(s, x) \ do { \ if ((s).sp == (s).end) { \ erl_grow_estack(&(s), 1); \ } \ *(s).sp++ = (x); \ } while(0) #define ESTACK_PUSH2(s, x, y) \ do { \ if ((s).sp > (s).end - 2) { \ erl_grow_estack(&(s), 2); \ } \ *(s).sp++ = (x); \ *(s).sp++ = (y); \ } while(0) #define ESTACK_PUSH3(s, x, y, z) \ do { \ if ((s).sp > (s).end - 3) { \ erl_grow_estack(&s, 3); \ } \ *(s).sp++ = (x); \ *(s).sp++ = (y); \ *(s).sp++ = (z); \ } while(0) #define ESTACK_PUSH4(s, E1, E2, E3, E4) \ do { \ if ((s).sp > (s).end - 4) { \ erl_grow_estack(&s, 4); \ } \ *(s).sp++ = (E1); \ *(s).sp++ = (E2); \ *(s).sp++ = (E3); \ *(s).sp++ = (E4); \ } while(0) #define ESTACK_RESERVE(s, push_cnt) \ do { \ if ((s).sp > (s).end - (push_cnt)) { \ erl_grow_estack(&(s), (push_cnt)); \ } \ } while(0) /* Must be preceded by ESTACK_RESERVE */ #define ESTACK_FAST_PUSH(s, x) \ do { \ ASSERT((s).sp < (s).end); \ *s.sp++ = (x); \ } while(0) #define ESTACK_COUNT(s) ((s).sp - (s).start) #define ESTACK_ISEMPTY(s) ((s).sp == (s).start) #define ESTACK_POP(s) (*(--(s).sp)) /* * WSTACK: same as ESTACK but with UWord instead of Eterm */ typedef struct ErtsWStack_ { UWord* wstart; UWord* wsp; UWord* wend; UWord* wdefault; ErtsAlcType_t alloc_type; }ErtsWStack; #define DEF_WSTACK_SIZE (16) void erl_grow_wstack(ErtsWStack*, Uint need); #define WSTK_CONCAT(a,b) a##b #define WSTK_DEF_STACK(s) WSTK_CONCAT(s,_default_wstack) #define WSTACK_DECLARE(s) \ UWord WSTK_DEF_STACK(s)[DEF_WSTACK_SIZE]; \ ErtsWStack s = { \ WSTK_DEF_STACK(s), /* wstart */ \ WSTK_DEF_STACK(s), /* wsp */ \ WSTK_DEF_STACK(s) + DEF_WSTACK_SIZE, /* wend */ \ WSTK_DEF_STACK(s), /* wdflt */ \ ERTS_ALC_T_ESTACK /* alloc_type */ \ } #define DECLARE_WSTACK WSTACK_DECLARE typedef struct ErtsDynamicWStack_ { UWord default_stack[DEF_WSTACK_SIZE]; ErtsWStack ws; }ErtsDynamicWStack; #define WSTACK_INIT(dwsp, ALC_TYPE) \ do { \ (dwsp)->ws.wstart = (dwsp)->default_stack; \ (dwsp)->ws.wsp = (dwsp)->default_stack; \ (dwsp)->ws.wend = (dwsp)->default_stack + DEF_WSTACK_SIZE;\ (dwsp)->ws.wdefault = (dwsp)->default_stack; \ (dwsp)->ws.alloc_type = ALC_TYPE; \ } while (0) #define WSTACK_CHANGE_ALLOCATOR(s,t) \ do { \ if (s.wstart != WSTK_DEF_STACK(s)) { \ erl_exit(1, "Internal error - trying to change allocator " \ "type of active wstack\n"); \ } \ s.alloc_type = (t); \ } while (0) #define WSTACK_DESTROY(s) \ do { \ if (s.wstart != s.wdefault) { \ erts_free(s.alloc_type, s.wstart); \ } \ } while(0) #define DESTROY_WSTACK WSTACK_DESTROY #define WSTACK_DEBUG(s) \ do { \ fprintf(stderr, "wstack size = %ld\r\n", s.wsp - s.wstart); \ fprintf(stderr, "wstack wstart = %p\r\n", s.wstart); \ fprintf(stderr, "wstack wsp = %p\r\n", s.wsp); \ } while(0) /* * Do not free the stack after this, it may have pointers into what * was saved in 'dst'. */ #define WSTACK_SAVE(s,dst)\ do {\ if (s.wstart == WSTK_DEF_STACK(s)) {\ UWord _wsz = WSTACK_COUNT(s);\ (dst)->wstart = erts_alloc(s.alloc_type,\ DEF_WSTACK_SIZE * sizeof(UWord));\ memcpy((dst)->wstart, s.wstart,_wsz*sizeof(UWord));\ (dst)->wsp = (dst)->wstart + _wsz;\ (dst)->wend = (dst)->wstart + DEF_WSTACK_SIZE;\ (dst)->wdefault = NULL;\ (dst)->alloc_type = s.alloc_type;\ } else\ *(dst) = s;\ } while (0) #define DESTROY_SAVED_WSTACK(wstack)\ do {\ if ((wstack)->wstart) {\ erts_free((wstack)->alloc_type, (wstack)->wstart);\ (wstack)->wstart = NULL;\ }\ } while(0) #define CLEAR_SAVED_WSTACK(wstack) ((void) ((wstack)->wstart = NULL)) /* * Use on empty stack, only the allocator can be changed before this. * The src stack is reset to NULL. */ #define WSTACK_RESTORE(s, src) \ do { \ ASSERT(s.wstart == WSTK_DEF_STACK(s)); \ s = *(src); /* struct copy */ \ (src)->wstart = NULL; \ ASSERT(s.wsp >= s.wstart); \ ASSERT(s.wsp <= s.wend); \ } while (0) #define WSTACK_IS_STATIC(s) (s.wstart == WSTK_DEF_STACK(s)) #define WSTACK_PUSH(s, x) \ do { \ if (s.wsp == s.wend) { \ erl_grow_wstack(&s, 1); \ } \ *s.wsp++ = (x); \ } while(0) #define WSTACK_PUSH2(s, x, y) \ do { \ if (s.wsp > s.wend - 2) { \ erl_grow_wstack(&s, 2); \ } \ *s.wsp++ = (x); \ *s.wsp++ = (y); \ } while(0) #define WSTACK_PUSH3(s, x, y, z) \ do { \ if (s.wsp > s.wend - 3) { \ erl_grow_wstack(&s, 3); \ } \ *s.wsp++ = (x); \ *s.wsp++ = (y); \ *s.wsp++ = (z); \ } while(0) #define WSTACK_PUSH4(s, A1, A2, A3, A4) \ do { \ if (s.wsp > s.wend - 4) { \ erl_grow_wstack(&s, 4); \ } \ *s.wsp++ = (A1); \ *s.wsp++ = (A2); \ *s.wsp++ = (A3); \ *s.wsp++ = (A4); \ } while(0) #define WSTACK_PUSH5(s, A1, A2, A3, A4, A5) \ do { \ if (s.wsp > s.wend - 5) { \ erl_grow_wstack(&s, 5); \ } \ *s.wsp++ = (A1); \ *s.wsp++ = (A2); \ *s.wsp++ = (A3); \ *s.wsp++ = (A4); \ *s.wsp++ = (A5); \ } while(0) #define WSTACK_PUSH6(s, A1, A2, A3, A4, A5, A6) \ do { \ if (s.wsp > s.wend - 6) { \ erl_grow_wstack(&s, 6); \ } \ *s.wsp++ = (A1); \ *s.wsp++ = (A2); \ *s.wsp++ = (A3); \ *s.wsp++ = (A4); \ *s.wsp++ = (A5); \ *s.wsp++ = (A6); \ } while(0) #define WSTACK_RESERVE(s, push_cnt) \ do { \ if (s.wsp > s.wend - (push_cnt)) { \ erl_grow_wstack(&s, (push_cnt)); \ } \ } while(0) /* Must be preceded by WSTACK_RESERVE */ #define WSTACK_FAST_PUSH(s, x) \ do { \ ASSERT(s.wsp < s.wend); \ *s.wsp++ = (x); \ } while(0) #define WSTACK_COUNT(s) (s.wsp - s.wstart) #define WSTACK_ISEMPTY(s) (s.wsp == s.wstart) #define WSTACK_POP(s) ((ASSERT(s.wsp > s.wstart)),*(--s.wsp)) #define WSTACK_ROLLBACK(s, count) (ASSERT(WSTACK_COUNT(s) >= (count)), \ s.wsp = s.wstart + (count)) /* PSTACK - Stack of any type. * Usage: * { * #define PSTACK_TYPE MyType * PSTACK_DECLARE(s,16); * MyType *sp = PSTACK_PUSH(s); * * sp->x = .... * sp->y = .... * sp = PSTACK_PUSH(s); * ... * sp = PSTACK_POP(s); * if (PSTACK_IS_EMPTY(s)) { * // sp is invalid when stack is empty after pop * } * * PSTACK_DESTROY(s); * } */ typedef struct ErtsPStack_ { byte* pstart; byte* psp; byte* pend; ErtsAlcType_t alloc_type; }ErtsPStack; void erl_grow_pstack(ErtsPStack* s, void* default_pstack, unsigned need_bytes); #define PSTK_CONCAT(a,b) a##b #define PSTK_DEF_STACK(s) PSTK_CONCAT(s,_default_pstack) #define PSTACK_DECLARE(s, DEF_PSTACK_SIZE) \ PSTACK_TYPE PSTK_DEF_STACK(s)[DEF_PSTACK_SIZE]; \ ErtsPStack s = { (byte*)PSTK_DEF_STACK(s), /* pstart */ \ (byte*)(PSTK_DEF_STACK(s) - 1), /* psp */ \ (byte*)(PSTK_DEF_STACK(s) + (DEF_PSTACK_SIZE)), /* pend */\ ERTS_ALC_T_ESTACK /* alloc_type */ \ } #define PSTACK_DESTROY(s) \ do { \ if (s.pstart != (byte*)PSTK_DEF_STACK(s)) { \ erts_free(s.alloc_type, s.pstart); \ } \ } while(0) #define PSTACK_IS_EMPTY(s) (s.psp < s.pstart) #define PSTACK_TOP(s) (ASSERT(!PSTACK_IS_EMPTY(s)), (PSTACK_TYPE*)(s.psp)) #define PSTACK_PUSH(s) \ (s.psp += sizeof(PSTACK_TYPE), \ ((s.psp == s.pend) ? erl_grow_pstack(&s, PSTK_DEF_STACK(s), \ sizeof(PSTACK_TYPE)) : (void)0), \ ((PSTACK_TYPE*) s.psp)) #define PSTACK_POP(s) ((PSTACK_TYPE*) (s.psp -= sizeof(PSTACK_TYPE))) /* binary.c */ void erts_emasculate_writable_binary(ProcBin* pb); Eterm erts_new_heap_binary(Process *p, byte *buf, int len, byte** datap); Eterm erts_new_mso_binary(Process*, byte*, int); Eterm new_binary(Process*, byte*, Uint); Eterm erts_realloc_binary(Eterm bin, size_t size); /* erl_bif_info.c */ Eterm erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt, Eterm item); void erts_bif_info_init(void); /* bif.c */ ERTS_GLB_INLINE Eterm erts_proc_store_ref(Process *c_p, Uint32 ref[ERTS_MAX_REF_NUMBERS]); #if ERTS_GLB_INLINE_INCL_FUNC_DEF ERTS_GLB_INLINE Eterm erts_proc_store_ref(Process *c_p, Uint32 ref[ERTS_MAX_REF_NUMBERS]) { Eterm *hp = HAlloc(c_p, REF_THING_SIZE); write_ref_thing(hp, ref[0], ref[1], ref[2]); return make_internal_ref(hp); } #endif void erts_queue_monitor_message(Process *, ErtsProcLocks*, Eterm, Eterm, Eterm, Eterm); void erts_init_trap_export(Export* ep, Eterm m, Eterm f, Uint a, Eterm (*bif)(Process*,Eterm*)); void erts_init_bif(void); Eterm erl_send(Process *p, Eterm to, Eterm msg); /* erl_bif_op.c */ Eterm erl_is_function(Process* p, Eterm arg1, Eterm arg2); /* beam_bif_load.c */ Eterm erts_check_process_code(Process *c_p, Eterm module, int allow_gc, int *redsp); /* beam_load.c */ typedef struct { BeamInstr* current; /* Pointer to: Mod, Name, Arity */ Uint needed; /* Heap space needed for entire tuple */ Uint32 loc; /* Location in source code */ Eterm* fname_ptr; /* Pointer to fname table */ } FunctionInfo; Binary* erts_alloc_loader_state(void); Eterm erts_module_for_prepared_code(Binary* magic); Eterm erts_prepare_loading(Binary* loader_state, Process *c_p, Eterm group_leader, Eterm* modp, byte* code, Uint size); Eterm erts_finish_loading(Binary* loader_state, Process* c_p, ErtsProcLocks c_p_locks, Eterm* modp); Eterm erts_preload_module(Process *c_p, ErtsProcLocks c_p_locks, Eterm group_leader, Eterm* mod, byte* code, Uint size); void init_load(void); BeamInstr* find_function_from_pc(BeamInstr* pc); Eterm* erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p); void erts_set_current_function(FunctionInfo* fi, BeamInstr* current); Eterm erts_module_info_0(Process* p, Eterm module); Eterm erts_module_info_1(Process* p, Eterm module, Eterm what); Eterm erts_make_stub_module(Process* p, Eterm Mod, Eterm Beam, Eterm Info); /* beam_ranges.c */ void erts_init_ranges(void); void erts_start_staging_ranges(void); void erts_end_staging_ranges(int commit); void erts_update_ranges(BeamInstr* code, Uint size); void erts_remove_from_ranges(BeamInstr* code); UWord erts_ranges_sz(void); void erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info); /* break.c */ void init_break_handler(void); void erts_set_ignore_break(void); void erts_replace_intr(void); void process_info(int, void *); void print_process_info(int, void *, Process*); void info(int, void *); void loaded(int, void *); /* erl_arith.c */ double erts_get_positive_zero_float(void); /* config.c */ __decl_noreturn void __noreturn erl_exit(int n, char*, ...); __decl_noreturn void __noreturn erl_exit_flush_async(int n, char*, ...); void erl_error(char*, va_list); /* copy.c */ Eterm copy_object(Eterm, Process*); #if HALFWORD_HEAP Uint size_object_rel(Eterm, Eterm*); # define size_object(A) size_object_rel(A,NULL) Eterm copy_struct_rel(Eterm, Uint, Eterm**, ErlOffHeap*, Eterm* src_base, Eterm* dst_base); # define copy_struct(OBJ,SZ,HPP,OH) copy_struct_rel(OBJ,SZ,HPP,OH, NULL,NULL) Eterm copy_shallow_rel(Eterm*, Uint, Eterm**, ErlOffHeap*, Eterm* src_base); # define copy_shallow(A,B,C,D) copy_shallow_rel(A,B,C,D,NULL) #else /* !HALFWORD_HEAP */ Uint size_object(Eterm); # define size_object_rel(A,B) size_object(A) Eterm copy_struct(Eterm, Uint, Eterm**, ErlOffHeap*); # define copy_struct_rel(OBJ,SZ,HPP,OH, SB,DB) copy_struct(OBJ,SZ,HPP,OH) Eterm copy_shallow(Eterm*, Uint, Eterm**, ErlOffHeap*); # define copy_shallow_rel(A,B,C,D, BASE) copy_shallow(A,B,C,D) #endif void move_multi_frags(Eterm** hpp, ErlOffHeap*, ErlHeapFragment* first, Eterm* refs, unsigned nrefs); /* Utilities */ extern void erts_delete_nodes_monitors(Process *, ErtsProcLocks); extern Eterm erts_monitor_nodes(Process *, Eterm, Eterm); extern Eterm erts_processes_monitoring_nodes(Process *); extern int erts_do_net_exits(DistEntry*, Eterm); extern int distribution_info(int, void *); extern int is_node_name_atom(Eterm a); extern int erts_net_message(Port *, DistEntry *, byte *, ErlDrvSizeT, byte *, ErlDrvSizeT); extern void init_dist(void); extern int stop_dist(void); void erl_progressf(char* format, ...); #ifdef MESS_DEBUG void print_pass_through(int, byte*, int); #endif /* beam_emu.c */ int catchlevel(Process*); void init_emulator(void); void process_main(void); Eterm build_stacktrace(Process* c_p, Eterm exc); Eterm expand_error_value(Process* c_p, Uint freason, Eterm Value); void erts_save_stacktrace(Process* p, struct StackTrace* s, int depth); /* erl_init.c */ typedef struct { Eterm delay_time; int context_reds; int input_reds; } ErtsModifiedTimings; extern Export *erts_delay_trap; extern int erts_modified_timing_level; extern ErtsModifiedTimings erts_modified_timings[]; #define ERTS_USE_MODIFIED_TIMING() \ (erts_modified_timing_level >= 0) #define ERTS_MODIFIED_TIMING_DELAY \ (erts_modified_timings[erts_modified_timing_level].delay_time) #define ERTS_MODIFIED_TIMING_CONTEXT_REDS \ (erts_modified_timings[erts_modified_timing_level].context_reds) #define ERTS_MODIFIED_TIMING_INPUT_REDS \ (erts_modified_timings[erts_modified_timing_level].input_reds) extern int erts_no_line_info; extern Eterm erts_error_logger_warnings; extern int erts_initialized; extern int erts_compat_rel; extern int erts_use_sender_punish; void erts_short_init(void); void erl_start(int, char**); void erts_usage(void); Eterm erts_preloaded(Process* p); /* erl_md5.c */ typedef struct { Uint32 state[4]; /* state (ABCD) */ Uint32 count[2]; /* number of bits, modulo 2^64 (lsb first) */ unsigned char buffer[64]; /* input buffer */ } MD5_CTX; void MD5Init(MD5_CTX *); void MD5Update(MD5_CTX *, unsigned char *, unsigned int); void MD5Final(unsigned char [16], MD5_CTX *); /* io.c */ typedef struct { char *name; char *driver_name; } ErtsPortNames; #define ERTS_SPAWN_DRIVER 1 #define ERTS_SPAWN_EXECUTABLE 2 #define ERTS_SPAWN_ANY (ERTS_SPAWN_DRIVER | ERTS_SPAWN_EXECUTABLE) int erts_add_driver_entry(ErlDrvEntry *drv, DE_Handle *handle, int driver_list_locked); void erts_destroy_driver(erts_driver_t *drv); int erts_save_suspend_process_on_port(Port*, Process*); Port *erts_open_driver(erts_driver_t*, Eterm, char*, SysDriverOpts*, int *, int *); void erts_init_io(int, int, int); void erts_raw_port_command(Port*, byte*, Uint); void driver_report_exit(ErlDrvPort, int); LineBuf* allocate_linebuf(int); int async_ready(Port *, void*); ErtsPortNames *erts_get_port_names(Eterm, ErlDrvPort); void erts_free_port_names(ErtsPortNames *); Uint erts_port_ioq_size(Port *pp); void erts_stale_drv_select(Eterm, ErlDrvPort, ErlDrvEvent, int, int); Port *erts_get_heart_port(void); void erts_emergency_close_ports(void); #if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_COUNT) void erts_lcnt_enable_io_lock_count(int enable); #endif /* driver_tab.c */ typedef void *(*ErtsStaticNifInitFPtr)(void); ErtsStaticNifInitFPtr erts_static_nif_get_nif_init(const char *name, int len); int erts_is_static_nif(void *handle); void erts_init_static_drivers(void); /* erl_drv_thread.c */ void erl_drv_thr_init(void); /* utils.c */ void erts_cleanup_offheap(ErlOffHeap *offheap); Uint64 erts_timestamp_millis(void); Export* erts_find_function(Eterm, Eterm, unsigned int, ErtsCodeIndex); Eterm store_external_or_ref_in_proc_(Process *, Eterm); Eterm store_external_or_ref_(Uint **, ErlOffHeap*, Eterm); #define NC_HEAP_SIZE(NC) \ (ASSERT(is_node_container((NC))), \ IS_CONST((NC)) ? 0 : (thing_arityval(*boxed_val((NC))) + 1)) #define STORE_NC(Hpp, ETpp, NC) \ (ASSERT(is_node_container((NC))), \ IS_CONST((NC)) ? (NC) : store_external_or_ref_((Hpp), (ETpp), (NC))) #define STORE_NC_IN_PROC(Pp, NC) \ (ASSERT(is_node_container((NC))), \ IS_CONST((NC)) ? (NC) : store_external_or_ref_in_proc_((Pp), (NC))) /* duplicates from big.h */ int term_to_Uint(Eterm term, Uint *up); int term_to_UWord(Eterm, UWord*); #ifdef HAVE_ERTS_NOW_CPU extern int erts_cpu_timestamp; #endif /* erl_bif_chksum.c */ void erts_init_bif_chksum(void); /* erl_bif_re.c */ void erts_init_bif_re(void); Sint erts_re_set_loop_limit(Sint limit); /* erl_bif_binary.c */ void erts_init_bif_binary(void); Sint erts_binary_set_loop_limit(Sint limit); /* external.c */ void erts_init_external(void); /* erl_unicode.c */ void erts_init_unicode(void); Sint erts_unicode_set_loop_limit(Sint limit); void erts_native_filename_put(Eterm ioterm, int encoding, byte *p) ; Sint erts_native_filename_need(Eterm ioterm, int encoding); void erts_copy_utf8_to_utf16_little(byte *target, byte *bytes, int num_chars); int erts_analyze_utf8(byte *source, Uint size, byte **err_pos, Uint *num_chars, int *left); int erts_analyze_utf8_x(byte *source, Uint size, byte **err_pos, Uint *num_chars, int *left, Sint *num_latin1_chars, Uint max_chars); char *erts_convert_filename_to_native(Eterm name, char *statbuf, size_t statbuf_size, ErtsAlcType_t alloc_type, int allow_empty, int allow_atom, Sint *used /* out */); char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbuf_size, ErtsAlcType_t alloc_type, int allow_empty, int allow_atom, int encoding, Sint *used /* out */, Uint extra); char* erts_convert_filename_to_wchar(byte* bytes, Uint size, char *statbuf, size_t statbuf_size, ErtsAlcType_t alloc_type, Sint* used, Uint extra_wchars); Eterm erts_convert_native_to_filename(Process *p, byte *bytes); Eterm erts_utf8_to_list(Process *p, Uint num, byte *bytes, Uint sz, Uint left, Uint *num_built, Uint *num_eaten, Eterm tail); int erts_utf8_to_latin1(byte* dest, const byte* source, int slen); #define ERTS_UTF8_OK 0 #define ERTS_UTF8_INCOMPLETE 1 #define ERTS_UTF8_ERROR 2 #define ERTS_UTF8_ANALYZE_MORE 3 #define ERTS_UTF8_OK_MAX_CHARS 4 void bin_write(int, void*, byte*, size_t); int intlist_to_buf(Eterm, char*, int); /* most callers pass plain char*'s */ struct Sint_buf { #if defined(ARCH_64) && !HALFWORD_HEAP char s[22]; #else char s[12]; #endif }; char* Sint_to_buf(Sint, struct Sint_buf*); #define ERTS_IOLIST_STATE_INITER(C_P, OBJ) \ {(C_P), 0, 0, (OBJ), {NULL, NULL, NULL, ERTS_ALC_T_INVALID}, 0, 0} #define ERTS_IOLIST_STATE_MOVE(TO, FROM) \ sys_memcpy((void *) (TO), (void *) (FROM), sizeof(ErtsIOListState)) #define ERTS_IOLIST_SIZE_YIELDS_COUNT_PER_RED 8 typedef struct { Process *c_p; ErlDrvSizeT size; Uint offs; Eterm obj; ErtsEStack estack; int reds_left; int have_size; } ErtsIOListState; #define ERTS_IOLIST2BUF_STATE_INITER(C_P, OBJ) \ {ERTS_IOLIST_STATE_INITER((C_P), (OBJ)), {NULL, 0, 0, 0}, NULL, 0, NULL, 0} #define ERTS_IOLIST2BUF_STATE_MOVE(TO, FROM) \ sys_memcpy((void *) (TO), (void *) (FROM), sizeof(ErtsIOList2BufState)) #define ERTS_IOLIST_TO_BUF_BYTES_PER_YIELD_COUNT 32 #define ERTS_IOLIST_TO_BUF_YIELD_COUNT_PER_RED 8 #define ERTS_IOLIST_TO_BUF_BYTES_PER_RED \ (ERTS_IOLIST_TO_BUF_YIELD_COUNT_PER_RED*ERTS_IOLIST_TO_BUF_BYTES_PER_YIELD_COUNT) typedef struct { ErtsIOListState iolist; struct { byte *bptr; size_t size; Uint bitoffs; Uint bitsize; } bcopy; char *buf; ErlDrvSizeT len; Eterm *objp; int offset; } ErtsIOList2BufState; #define ERTS_IOLIST_OK 0 #define ERTS_IOLIST_OVERFLOW 1 #define ERTS_IOLIST_TYPE 2 #define ERTS_IOLIST_YIELD 3 Eterm buf_to_intlist(Eterm**, const char*, size_t, Eterm); /* most callers pass plain char*'s */ #define ERTS_IOLIST_TO_BUF_OVERFLOW (~((ErlDrvSizeT) 0)) #define ERTS_IOLIST_TO_BUF_TYPE_ERROR (~((ErlDrvSizeT) 1)) #define ERTS_IOLIST_TO_BUF_YIELD (~((ErlDrvSizeT) 2)) #define ERTS_IOLIST_TO_BUF_FAILED(R) \ (((R) & (~((ErlDrvSizeT) 3))) == (~((ErlDrvSizeT) 3))) #define ERTS_IOLIST_TO_BUF_SUCCEEDED(R) \ (!ERTS_IOLIST_TO_BUF_FAILED((R))) ErlDrvSizeT erts_iolist_to_buf(Eterm, char*, ErlDrvSizeT); ErlDrvSizeT erts_iolist_to_buf_yielding(ErtsIOList2BufState *); int erts_iolist_size_yielding(ErtsIOListState *state); int erts_iolist_size(Eterm, ErlDrvSizeT *); int is_string(Eterm); void erl_at_exit(void (*) (void*), void*); Eterm collect_memory(Process *); void dump_memory_to_fd(int); int dump_memory_data(const char *); Eterm erts_mixed_plus(Process* p, Eterm arg1, Eterm arg2); Eterm erts_mixed_minus(Process* p, Eterm arg1, Eterm arg2); Eterm erts_mixed_times(Process* p, Eterm arg1, Eterm arg2); Eterm erts_mixed_div(Process* p, Eterm arg1, Eterm arg2); Eterm erts_int_div(Process* p, Eterm arg1, Eterm arg2); Eterm erts_int_rem(Process* p, Eterm arg1, Eterm arg2); Eterm erts_band(Process* p, Eterm arg1, Eterm arg2); Eterm erts_bor(Process* p, Eterm arg1, Eterm arg2); Eterm erts_bxor(Process* p, Eterm arg1, Eterm arg2); Eterm erts_bnot(Process* p, Eterm arg); Eterm erts_gc_mixed_plus(Process* p, Eterm* reg, Uint live); Eterm erts_gc_mixed_minus(Process* p, Eterm* reg, Uint live); Eterm erts_gc_mixed_times(Process* p, Eterm* reg, Uint live); Eterm erts_gc_mixed_div(Process* p, Eterm* reg, Uint live); Eterm erts_gc_int_div(Process* p, Eterm* reg, Uint live); Eterm erts_gc_int_rem(Process* p, Eterm* reg, Uint live); Eterm erts_gc_band(Process* p, Eterm* reg, Uint live); Eterm erts_gc_bor(Process* p, Eterm* reg, Uint live); Eterm erts_gc_bxor(Process* p, Eterm* reg, Uint live); Eterm erts_gc_bnot(Process* p, Eterm* reg, Uint live); Eterm erts_gc_length_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_size_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_bit_size_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_byte_size_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_map_size_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_abs_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_float_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_round_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_trunc_1(Process* p, Eterm* reg, Uint live); Eterm erts_gc_binary_part_3(Process* p, Eterm* reg, Uint live); Eterm erts_gc_binary_part_2(Process* p, Eterm* reg, Uint live); Uint erts_current_reductions(Process* current, Process *p); int erts_print_system_version(int to, void *arg, Process *c_p); int erts_hibernate(Process* c_p, Eterm module, Eterm function, Eterm args, Eterm* reg); /* ** Call_trace uses this API for the parameter matching functions */ #define MatchSetRef(MPSP) \ do { \ if ((MPSP) != NULL) { \ erts_refc_inc(&(MPSP)->refc, 1); \ } \ } while (0) #define MatchSetUnref(MPSP) \ do { \ if (((MPSP) != NULL) && erts_refc_dectest(&(MPSP)->refc, 0) <= 0) { \ erts_bin_free(MPSP); \ } \ } while(0) #define MatchSetGetSource(MPSP) erts_match_set_get_source(MPSP) extern Binary *erts_match_set_compile(Process *p, Eterm matchexpr); Eterm erts_match_set_lint(Process *p, Eterm matchexpr); extern void erts_match_set_release_result(Process* p); enum erts_pam_run_flags { ERTS_PAM_TMP_RESULT=1, ERTS_PAM_COPY_RESULT=2, ERTS_PAM_CONTIGUOUS_TUPLE=4, ERTS_PAM_IGNORE_TRACE_SILENT=8 }; extern Eterm erts_match_set_run(Process *p, Binary *mpsp, Eterm *args, int num_args, enum erts_pam_run_flags in_flags, Uint32 *return_flags); extern Eterm erts_match_set_get_source(Binary *mpsp); extern void erts_match_prog_foreach_offheap(Binary *b, void (*)(ErlOffHeap *, void *), void *); #define MATCH_SET_RETURN_TRACE (0x1) /* return trace requested */ #define MATCH_SET_RETURN_TO_TRACE (0x2) /* Misleading name, it is not actually set by the match program, but by the breakpoint functions */ #define MATCH_SET_EXCEPTION_TRACE (0x4) /* exception trace requested */ #define MATCH_SET_RX_TRACE (MATCH_SET_RETURN_TRACE|MATCH_SET_EXCEPTION_TRACE) extern erts_driver_t vanilla_driver; extern erts_driver_t spawn_driver; extern erts_driver_t fd_driver; int erts_beam_jump_table(void); /* Should maybe be placed in erl_message.h, but then we get an include mess. */ ERTS_GLB_INLINE Eterm * erts_alloc_message_heap_state(Uint size, ErlHeapFragment **bpp, ErlOffHeap **ohpp, Process *receiver, ErtsProcLocks *receiver_locks, erts_aint32_t *statep); ERTS_GLB_INLINE Eterm * erts_alloc_message_heap(Uint size, ErlHeapFragment **bpp, ErlOffHeap **ohpp, Process *receiver, ErtsProcLocks *receiver_locks); #if ERTS_GLB_INLINE_INCL_FUNC_DEF /* * NOTE: erts_alloc_message_heap() releases msg q and status * lock on receiver without ensuring that other locks are * held. User is responsible to ensure that the receiver * pointer cannot become invalid until after message has * been passed. This is normal done either by increasing * reference count on process (preferred) or by holding * main or link lock over the whole message passing * operation. */ ERTS_GLB_INLINE Eterm * erts_alloc_message_heap_state(Uint size, ErlHeapFragment **bpp, ErlOffHeap **ohpp, Process *receiver, ErtsProcLocks *receiver_locks, erts_aint32_t *statep) { Eterm *hp; erts_aint32_t state; #ifdef ERTS_SMP int locked_main = 0; state = erts_smp_atomic32_read_acqb(&receiver->state); if (statep) *statep = state; if (state & (ERTS_PSFLG_EXITING | ERTS_PSFLG_PENDING_EXIT)) goto allocate_in_mbuf; #endif if (size > (Uint) INT_MAX) erl_exit(ERTS_ABORT_EXIT, "HUGE size (%beu)\n", size); if ( #if defined(ERTS_SMP) *receiver_locks & ERTS_PROC_LOCK_MAIN #else 1 #endif ) { #ifdef ERTS_SMP try_allocate_on_heap: #endif state = erts_smp_atomic32_read_nob(&receiver->state); if (statep) *statep = state; if ((state & (ERTS_PSFLG_EXITING | ERTS_PSFLG_PENDING_EXIT)) || (receiver->flags & F_DISABLE_GC) || HEAP_LIMIT(receiver) - HEAP_TOP(receiver) <= size) { /* * The heap is either potentially in an inconsistent * state, or not large enough. */ #ifdef ERTS_SMP if (locked_main) { *receiver_locks &= ~ERTS_PROC_LOCK_MAIN; erts_smp_proc_unlock(receiver, ERTS_PROC_LOCK_MAIN); } #endif goto allocate_in_mbuf; } hp = HEAP_TOP(receiver); HEAP_TOP(receiver) = hp + size; *bpp = NULL; *ohpp = &MSO(receiver); } #ifdef ERTS_SMP else if (erts_smp_proc_trylock(receiver, ERTS_PROC_LOCK_MAIN) == 0) { locked_main = 1; *receiver_locks |= ERTS_PROC_LOCK_MAIN; goto try_allocate_on_heap; } #endif else { ErlHeapFragment *bp; allocate_in_mbuf: bp = new_message_buffer(size); hp = bp->mem; *bpp = bp; *ohpp = &bp->off_heap; } return hp; } ERTS_GLB_INLINE Eterm * erts_alloc_message_heap(Uint size, ErlHeapFragment **bpp, ErlOffHeap **ohpp, Process *receiver, ErtsProcLocks *receiver_locks) { return erts_alloc_message_heap_state(size, bpp, ohpp, receiver, receiver_locks, NULL); } #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */ #if !HEAP_ON_C_STACK # if defined(DEBUG) # define DeclareTmpHeap(VariableName,Size,Process) \ Eterm *VariableName = erts_debug_allocate_tmp_heap(Size,Process) # define DeclareTypedTmpHeap(Type,VariableName,Process) \ Type *VariableName = (Type *) erts_debug_allocate_tmp_heap(sizeof(Type)/sizeof(Eterm),Process) # define DeclareTmpHeapNoproc(VariableName,Size) \ Eterm *VariableName = erts_debug_allocate_tmp_heap(Size,NULL) # define UseTmpHeap(Size,Proc) \ do { \ erts_debug_use_tmp_heap((Size),(Proc)); \ } while (0) # define UnUseTmpHeap(Size,Proc) \ do { \ erts_debug_unuse_tmp_heap((Size),(Proc)); \ } while (0) # define UseTmpHeapNoproc(Size) \ do { \ erts_debug_use_tmp_heap(Size,NULL); \ } while (0) # define UnUseTmpHeapNoproc(Size) \ do { \ erts_debug_unuse_tmp_heap(Size,NULL); \ } while (0) # else # define DeclareTmpHeap(VariableName,Size,Process) \ Eterm *VariableName = (ERTS_PROC_GET_SCHDATA(Process)->tmp_heap)+(ERTS_PROC_GET_SCHDATA(Process)->num_tmp_heap_used) # define DeclareTypedTmpHeap(Type,VariableName,Process) \ Type *VariableName = (Type *) (ERTS_PROC_GET_SCHDATA(Process)->tmp_heap)+(ERTS_PROC_GET_SCHDATA(Process)->num_tmp_heap_used) # define DeclareTmpHeapNoproc(VariableName,Size) \ Eterm *VariableName = (erts_get_scheduler_data()->tmp_heap)+(erts_get_scheduler_data()->num_tmp_heap_used) # define UseTmpHeap(Size,Proc) \ do { \ ERTS_PROC_GET_SCHDATA(Proc)->num_tmp_heap_used += (Size); \ } while (0) # define UnUseTmpHeap(Size,Proc) \ do { \ ERTS_PROC_GET_SCHDATA(Proc)->num_tmp_heap_used -= (Size); \ } while (0) # define UseTmpHeapNoproc(Size) \ do { \ erts_get_scheduler_data()->num_tmp_heap_used += (Size); \ } while (0) # define UnUseTmpHeapNoproc(Size) \ do { \ erts_get_scheduler_data()->num_tmp_heap_used -= (Size); \ } while (0) # endif #else # define DeclareTmpHeap(VariableName,Size,Process) \ Eterm VariableName[Size] # define DeclareTypedTmpHeap(Type,VariableName,Process) \ Type VariableName[1] # define DeclareTmpHeapNoproc(VariableName,Size) \ Eterm VariableName[Size] # define UseTmpHeap(Size,Proc) /* Nothing */ # define UnUseTmpHeap(Size,Proc) /* Nothing */ # define UseTmpHeapNoproc(Size) /* Nothing */ # define UnUseTmpHeapNoproc(Size) /* Nothing */ #endif /* HEAP_ON_C_STACK */ ERTS_GLB_INLINE void dtrace_pid_str(Eterm pid, char *process_buf); ERTS_GLB_INLINE void dtrace_proc_str(Process *process, char *process_buf); ERTS_GLB_INLINE void dtrace_port_str(Port *port, char *port_buf); ERTS_GLB_INLINE void dtrace_fun_decode(Process *process, Eterm module, Eterm function, int arity, char *process_buf, char *mfa_buf); #if ERTS_GLB_INLINE_INCL_FUNC_DEF #include "dtrace-wrapper.h" ERTS_GLB_INLINE void dtrace_pid_str(Eterm pid, char *process_buf) { erts_snprintf(process_buf, DTRACE_TERM_BUF_SIZE, "<%lu.%lu.%lu>", pid_channel_no(pid), pid_number(pid), pid_serial(pid)); } ERTS_GLB_INLINE void dtrace_proc_str(Process *process, char *process_buf) { dtrace_pid_str(process->common.id, process_buf); } ERTS_GLB_INLINE void dtrace_port_str(Port *port, char *port_buf) { erts_snprintf(port_buf, DTRACE_TERM_BUF_SIZE, "#Port<%lu.%lu>", port_channel_no(port->common.id), port_number(port->common.id)); } ERTS_GLB_INLINE void dtrace_fun_decode(Process *process, Eterm module, Eterm function, int arity, char *process_buf, char *mfa_buf) { if (process_buf) { dtrace_proc_str(process, process_buf); } erts_snprintf(mfa_buf, DTRACE_TERM_BUF_SIZE, "%T:%T/%d", module, function, arity); } #endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */ #endif /* !__GLOBAL_H__ */