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-rw-r--r--erts/configure.in4
-rw-r--r--erts/doc/src/erl.xml50
-rw-r--r--erts/doc/src/erl_driver.xml78
-rw-r--r--erts/emulator/beam/erl_driver.h8
-rw-r--r--erts/emulator/beam/erl_drv_thread.c42
-rw-r--r--erts/emulator/beam/erl_init.c173
-rw-r--r--erts/emulator/beam/erl_port_task.c23
-rw-r--r--erts/emulator/drivers/common/inet_drv.c167
-rw-r--r--erts/emulator/test/scheduler_SUITE.erl64
-rw-r--r--erts/etc/common/erlexec.c18
-rw-r--r--erts/preloaded/ebin/prim_inet.beambin70520 -> 70960 bytes
-rw-r--r--erts/preloaded/src/prim_inet.erl37
12 files changed, 575 insertions, 89 deletions
diff --git a/erts/configure.in b/erts/configure.in
index 64436e933c..00c7045ea2 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1679,6 +1679,10 @@ if test x"$ac_cv_header_netinet_sctp_h" = x"yes"; then
])
fi
+dnl Check for setns
+AC_CHECK_HEADERS(sched.h setns.h)
+AC_CHECK_FUNCS([setns])
+
HAVE_VALGRIND=no
AC_CHECK_HEADER(valgrind/valgrind.h, HAVE_VALGRIND=yes)
AC_SUBST(HAVE_VALGRIND)
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 70569b1c6c..c16b45856d 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -748,19 +748,47 @@
</item>
<tag><marker id="+S"><c><![CDATA[+S Schedulers:SchedulerOnline]]></c></marker></tag>
<item>
- <p>Sets the amount of scheduler threads to create and scheduler
- threads to set online when SMP support has been enabled.
- Valid range for both values are 1-1024. If the
- Erlang runtime system is able to determine the amount
- of logical processors configured and logical processors available,
- <c>Schedulers</c> will default to logical processors configured,
- and <c>SchedulersOnline</c> will default to logical processors
- available; otherwise, the default values will be 1. <c>Schedulers</c>
- may be omitted if <c>:SchedulerOnline</c> is not and vice versa. The
- amount of schedulers online can be changed at run time via
+ <p>Sets the number of scheduler threads to create and scheduler
+ threads to set online when SMP support has been enabled. The maximum for
+ both values is 1024. If the Erlang runtime system is able to determine the
+ amount of logical processors configured and logical processors available,
+ <c>Schedulers</c> will default to logical processors configured, and
+ <c>SchedulersOnline</c> will default to logical processors available;
+ otherwise, the default values will be 1. <c>Schedulers</c> may be omitted
+ if <c>:SchedulerOnline</c> is not and vice versa. The number of schedulers
+ online can be changed at run time via
<seealso marker="erlang#system_flag_schedulers_online">erlang:system_flag(schedulers_online, SchedulersOnline)</seealso>.
</p>
- <p>This flag will be ignored if the emulator doesn't have
+ <p>If <c>Schedulers</c> or <c>SchedulersOnline</c> is specified as a
+ negative number, the value is subtracted from the default number of
+ logical processors configured or logical processors available, respectively.
+ </p>
+ <p>Specifying the value 0 for <c>Schedulers</c> or <c>SchedulersOnline</c>
+ resets the number of scheduler threads or scheduler threads online respectively
+ to its default value.
+ </p>
+ <p>This option is ignored if the emulator doesn't have
+ SMP support enabled (see the <seealso marker="#smp">-smp</seealso>
+ flag).</p>
+ </item>
+ <tag><marker id="+SP"><c><![CDATA[+SP SchedulersPercentage:SchedulersOnlinePercentage]]></c></marker></tag>
+ <item>
+ <p>Similar to <seealso marker="#+S">+S</seealso> but uses percentages to set the
+ number of scheduler threads to create, based on logical processors configured,
+ and scheduler threads to set online, based on logical processors available, when
+ SMP support has been enabled. Specified values must be greater than 0. For example,
+ <c>+SP 50:25</c> sets the number of scheduler threads to 50% of the logical processors
+ configured and the number of scheduler threads online to 25% of the logical processors available.
+ <c>SchedulersPercentage</c> may be omitted if <c>:SchedulersOnlinePercentage</c> is
+ not and vice versa. The number of schedulers online can be changed at run time via
+ <seealso marker="erlang#system_flag_schedulers_online">erlang:system_flag(schedulers_online, SchedulersOnline)</seealso>.
+ </p>
+ <p>This option interacts with <seealso marker="#+S">+S</seealso> settings.
+ For example, on a system with 8 logical cores configured and 8 logical cores
+ available, the combination of the options <c>+S 4:4 +SP 50:25</c> (in either order)
+ results in 2 scheduler threads (50% of 4) and 1 scheduler thread online (25% of 4).
+ </p>
+ <p>This option is ignored if the emulator doesn't have
SMP support enabled (see the <seealso marker="#smp">-smp</seealso>
flag).</p>
</item>
diff --git a/erts/doc/src/erl_driver.xml b/erts/doc/src/erl_driver.xml
index 540390e1b1..c055d1ca9e 100644
--- a/erts/doc/src/erl_driver.xml
+++ b/erts/doc/src/erl_driver.xml
@@ -2907,8 +2907,84 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len
beginning of this document.</p>
</desc>
</func>
- </funcs>
+ <func>
+ <name><ret>char *</ret><nametext>erl_drv_cond_name(ErlDrvCond *cnd)</nametext></name>
+ <fsummary>Get name of driver mutex.</fsummary>
+ <desc>
+ <marker id="erl_drv_cnd_name"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>cnd</c></tag>
+ <item>A pointer to an initialized condition.</item>
+ </taglist>
+ <p>
+ Returns a pointer to the name of the condition.
+ </p>
+ <note>
+ <p>This function is intended for debugging purposes only.</p>
+ </note>
+ </desc>
+ </func>
+
+ <func>
+ <name><ret>char *</ret><nametext>erl_drv_mutex_name(ErlDrvMutex *mtx)</nametext></name>
+ <fsummary>Get name of driver mutex.</fsummary>
+ <desc>
+ <marker id="erl_drv_mutex_name"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>mtx</c></tag>
+ <item>A pointer to an initialized mutex.</item>
+ </taglist>
+ <p>
+ Returns a pointer to the name of the mutex.
+ </p>
+ <note>
+ <p>This function is intended for debugging purposes only.</p>
+ </note>
+ </desc>
+ </func>
+
+ <func>
+ <name><ret>char *</ret><nametext>erl_drv_rwlock_name(ErlDrvRWLock *rwlck)</nametext></name>
+ <fsummary>Get name of driver mutex.</fsummary>
+ <desc>
+ <marker id="erl_drv_rwlock_name"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>rwlck</c></tag>
+ <item>A pointer to an initialized r/w-lock.</item>
+ </taglist>
+ <p>
+ Returns a pointer to the name of the r/w-lock.
+ </p>
+ <note>
+ <p>This function is intended for debugging purposes only.</p>
+ </note>
+ </desc>
+ </func>
+
+ <func>
+ <name><ret>char *</ret><nametext>erl_drv_thread_name(ErlDrvTid tid)</nametext></name>
+ <fsummary>Get name of driver mutex.</fsummary>
+ <desc>
+ <marker id="erl_drv_rwlock_name"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>tid</c></tag>
+ <item>A thread identifier.</item>
+ </taglist>
+ <p>
+ Returns a pointer to the name of the thread.
+ </p>
+ <note>
+ <p>This function is intended for debugging purposes only.</p>
+ </note>
+ </desc>
+ </func>
+
+ </funcs>
<section>
<title>SEE ALSO</title>
<p><seealso marker="driver_entry">driver_entry(3)</seealso>,
diff --git a/erts/emulator/beam/erl_driver.h b/erts/emulator/beam/erl_driver.h
index 1ab6e17f56..b68fd46fcc 100644
--- a/erts/emulator/beam/erl_driver.h
+++ b/erts/emulator/beam/erl_driver.h
@@ -546,6 +546,11 @@ EXTERN int erl_drv_equal_tids(ErlDrvTid tid1, ErlDrvTid tid2);
EXTERN void erl_drv_thread_exit(void *resp);
EXTERN int erl_drv_thread_join(ErlDrvTid, void **respp);
+EXTERN char* erl_drv_mutex_name(ErlDrvMutex *mtx);
+EXTERN char* erl_drv_cond_name(ErlDrvCond *cnd);
+EXTERN char* erl_drv_rwlock_name(ErlDrvRWLock *rwlck);
+EXTERN char* erl_drv_thread_name(ErlDrvTid tid);
+
/*
* Misc.
*/
@@ -683,6 +688,3 @@ EXTERN int erl_drv_getenv(char *key, char *value, size_t *value_size);
/* also in global.h, but driver's can't include global.h */
void dtrace_drvport_str(ErlDrvPort port, char *port_buf);
-
-
-
diff --git a/erts/emulator/beam/erl_drv_thread.c b/erts/emulator/beam/erl_drv_thread.c
index a49a155701..4f1bba8657 100644
--- a/erts/emulator/beam/erl_drv_thread.c
+++ b/erts/emulator/beam/erl_drv_thread.c
@@ -188,6 +188,17 @@ erl_drv_mutex_destroy(ErlDrvMutex *dmtx)
#endif
}
+
+char *
+erl_drv_mutex_name(ErlDrvMutex *dmtx)
+{
+#ifdef USE_THREADS
+ return dmtx ? dmtx->name : NULL;
+#else
+ return NULL;
+#endif
+}
+
int
erl_drv_mutex_trylock(ErlDrvMutex *dmtx)
{
@@ -258,6 +269,15 @@ erl_drv_cond_destroy(ErlDrvCond *dcnd)
#endif
}
+char *
+erl_drv_cond_name(ErlDrvCond *dcnd)
+{
+#ifdef USE_THREADS
+ return dcnd ? dcnd->name : NULL;
+#else
+ return NULL;
+#endif
+}
void
erl_drv_cond_signal(ErlDrvCond *dcnd)
@@ -331,6 +351,16 @@ erl_drv_rwlock_destroy(ErlDrvRWLock *drwlck)
#endif
}
+char *
+erl_drv_rwlock_name(ErlDrvRWLock *drwlck)
+{
+#ifdef USE_THREADS
+ return drwlck ? drwlck->name : NULL;
+#else
+ return NULL;
+#endif
+}
+
int
erl_drv_rwlock_tryrlock(ErlDrvRWLock *drwlck)
{
@@ -617,6 +647,18 @@ erl_drv_thread_create(char *name,
#endif
}
+char *
+erl_drv_thread_name(ErlDrvTid tid)
+{
+#ifdef USE_THREADS
+ struct ErlDrvTid_ *dtid = (struct ErlDrvTid_ *) tid;
+ return dtid ? dtid->name : NULL;
+#else
+ return NULL;
+#endif
+}
+
+
ErlDrvTid
erl_drv_thread_self(void)
{
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 8d137df7ae..8c4fffa75b 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -549,9 +549,12 @@ void erts_usage(void)
ERTS_SCHED_THREAD_MAX_STACK_SIZE);
erts_fprintf(stderr, "-spp Bool set port parallelism scheduling hint\n");
erts_fprintf(stderr, "-S n1:n2 set number of schedulers (n1), and number of\n");
- erts_fprintf(stderr, " schedulers online (n2), valid range for both\n");
- erts_fprintf(stderr, " numbers are [1-%d]\n",
+ erts_fprintf(stderr, " schedulers online (n2), maximum for both\n");
+ erts_fprintf(stderr, " numbers is %d\n",
ERTS_MAX_NO_OF_SCHEDULERS);
+ erts_fprintf(stderr, "-SP p1:p2 specify schedulers (p1) and schedulers online (p2)\n");
+ erts_fprintf(stderr, " as percentages of logical processors configured and logical\n");
+ erts_fprintf(stderr, " processors available, respectively\n");
erts_fprintf(stderr, "-t size set the maximum number of atoms the "
"emulator can handle\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
@@ -631,6 +634,8 @@ early_init(int *argc, char **argv) /*
int ncpuavail;
int schdlrs;
int schdlrs_onln;
+ int schdlrs_percentage = 100;
+ int schdlrs_onln_percentage = 100;
int max_main_threads;
int max_reader_groups;
int reader_groups;
@@ -758,63 +763,132 @@ early_init(int *argc, char **argv) /*
}
break;
}
- case 'S' : {
- int tot, onln;
- char *arg = get_arg(argv[i]+2, argv[i+1], &i);
- switch (sscanf(arg, "%d:%d", &tot, &onln)) {
- case 0:
- switch (sscanf(arg, ":%d", &onln)) {
+ case 'S' :
+ if (argv[i][2] == 'P') {
+ int ptot, ponln;
+ char *arg = get_arg(argv[i]+3, argv[i+1], &i);
+ switch (sscanf(arg, "%d:%d", &ptot, &ponln)) {
+ case 0:
+ switch (sscanf(arg, ":%d", &ponln)) {
+ case 1:
+ if (ponln < 0)
+ goto bad_SP;
+ ptot = 100;
+ goto chk_SP;
+ default:
+ goto bad_SP;
+ }
case 1:
- tot = no_schedulers;
- goto chk_S;
+ if (ptot < 0)
+ goto bad_SP;
+ ponln = ptot < 100 ? ptot : 100;
+ goto chk_SP;
+ case 2:
+ if (ptot < 0 || ponln < 0)
+ goto bad_SP;
+ chk_SP:
+ schdlrs_percentage = ptot;
+ schdlrs_onln_percentage = ponln;
+ break;
default:
- goto bad_S;
- }
- case 1:
- onln = tot < schdlrs_onln ? tot : schdlrs_onln;
- case 2:
- chk_S:
- if (tot > 0)
- schdlrs = tot;
- else
- schdlrs = no_schedulers + tot;
- if (onln > 0)
- schdlrs_onln = onln;
- else
- schdlrs_onln = no_schedulers_online + onln;
- if (schdlrs < 1 || ERTS_MAX_NO_OF_SCHEDULERS < schdlrs) {
- erts_fprintf(stderr,
- "bad amount of schedulers %d\n",
- tot);
- erts_usage();
- }
- if (schdlrs_onln < 1 || schdlrs < schdlrs_onln) {
+ bad_SP:
+ erts_fprintf(stderr,
+ "bad schedulers percentage specifier %s\n",
+ arg);
+ erts_usage();
+ break;
+ }
+
+ VERBOSE(DEBUG_SYSTEM,
+ ("using %d:%d scheduler percentages\n",
+ schdlrs_percentage, schdlrs_onln_percentage));
+ } else {
+ int tot, onln;
+ char *arg = get_arg(argv[i]+2, argv[i+1], &i);
+ switch (sscanf(arg, "%d:%d", &tot, &onln)) {
+ case 0:
+ switch (sscanf(arg, ":%d", &onln)) {
+ case 1:
+ tot = no_schedulers;
+ goto chk_S;
+ default:
+ goto bad_S;
+ }
+ case 1:
+ onln = tot < schdlrs_onln ? tot : schdlrs_onln;
+ case 2:
+ chk_S:
+ if (tot > 0)
+ schdlrs = tot;
+ else
+ schdlrs = no_schedulers + tot;
+ if (onln > 0)
+ schdlrs_onln = onln;
+ else
+ schdlrs_onln = no_schedulers_online + onln;
+ if (schdlrs < 1 || ERTS_MAX_NO_OF_SCHEDULERS < schdlrs) {
+ erts_fprintf(stderr,
+ "bad amount of schedulers %d\n",
+ tot);
+ erts_usage();
+ }
+ if (schdlrs_onln < 1 || schdlrs < schdlrs_onln) {
+ erts_fprintf(stderr,
+ "bad amount of schedulers online %d "
+ "(total amount of schedulers %d)\n",
+ schdlrs_onln, schdlrs);
+ erts_usage();
+ }
+ break;
+ default:
+ bad_S:
erts_fprintf(stderr,
- "bad amount of schedulers online %d "
- "(total amount of schedulers %d)\n",
- schdlrs_onln, schdlrs);
+ "bad amount of schedulers %s\n",
+ arg);
erts_usage();
+ break;
}
- break;
- default:
- bad_S:
- erts_fprintf(stderr,
- "bad amount of schedulers %s\n",
- arg);
- erts_usage();
- break;
- }
- VERBOSE(DEBUG_SYSTEM,
- ("using %d:%d scheduler(s)\n", tot, onln));
- break;
- }
+ VERBOSE(DEBUG_SYSTEM,
+ ("using %d:%d scheduler(s)\n", tot, onln));
+ }
+ break;
default:
break;
}
}
i++;
}
+
+#ifdef ERTS_SMP
+ /* apply any scheduler percentages */
+ if (schdlrs_percentage != 100 || schdlrs_onln_percentage != 100) {
+ schdlrs = schdlrs * schdlrs_percentage / 100;
+ schdlrs_onln = schdlrs_onln * schdlrs_onln_percentage / 100;
+ if (schdlrs < 1)
+ schdlrs = 1;
+ if (ERTS_MAX_NO_OF_SCHEDULERS < schdlrs) {
+ erts_fprintf(stderr,
+ "bad schedulers percentage %d "
+ "(total amount of schedulers %d)\n",
+ schdlrs_percentage, schdlrs);
+ erts_usage();
+ }
+ if (schdlrs_onln < 1)
+ schdlrs_onln = 1;
+ if (schdlrs < schdlrs_onln) {
+ erts_fprintf(stderr,
+ "bad schedulers online percentage %d "
+ "(total amount of schedulers %d, online %d)\n",
+ schdlrs_onln_percentage, schdlrs, schdlrs_onln);
+ erts_usage();
+ }
+ }
+#else
+ /* Silence gcc warnings */
+ (void)schdlrs_percentage;
+ (void)schdlrs_onln_percentage;
+#endif
}
#ifndef USE_THREADS
@@ -1312,7 +1386,10 @@ erl_start(int argc, char **argv)
break;
case 'S' : /* Was handled in early_init() just read past it */
- (void) get_arg(argv[i]+2, argv[i+1], &i);
+ if (argv[i][2] == 'P')
+ (void) get_arg(argv[i]+3, argv[i+1], &i);
+ else
+ (void) get_arg(argv[i]+2, argv[i+1], &i);
break;
case 's' : {
diff --git a/erts/emulator/beam/erl_port_task.c b/erts/emulator/beam/erl_port_task.c
index 7d53ce7152..547a42beb2 100644
--- a/erts/emulator/beam/erl_port_task.c
+++ b/erts/emulator/beam/erl_port_task.c
@@ -1838,6 +1838,16 @@ release_port(void *vport)
{
erts_port_dec_refc((Port *) vport);
}
+
+static void
+schedule_release_port(void *vport) {
+ Port *pp = (Port*)vport;
+ /* This is only used when a port release was ordered from a non-scheduler */
+ erts_schedule_thr_prgr_later_op(release_port,
+ (void *) pp,
+ &pp->common.u.release);
+}
+
#endif
static void
@@ -2033,10 +2043,15 @@ begin_port_cleanup(Port *pp, ErtsPortTask **execqp, int *processing_busy_q_p)
* Schedule cleanup of port structure...
*/
#ifdef ERTS_SMP
- /* Has to be more or less immediate to release any driver */
- erts_schedule_thr_prgr_later_op(release_port,
- (void *) pp,
- &pp->common.u.release);
+ /* We might not be a scheduler, eg. traceing to port we are sys_msg_dispatcher */
+ if (!erts_get_scheduler_data()) {
+ erts_schedule_misc_aux_work(1, schedule_release_port, (void*)pp);
+ } else {
+ /* Has to be more or less immediate to release any driver */
+ erts_schedule_thr_prgr_later_op(release_port,
+ (void *) pp,
+ &pp->common.u.release);
+ }
#else
pp->cleanup = 1;
#endif
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 301ce2d0e2..60db50e80a 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -282,7 +282,7 @@ static BOOL (WINAPI *fpSetHandleInformation)(HANDLE,DWORD,DWORD);
static unsigned long zero_value = 0;
static unsigned long one_value = 1;
-#else
+#else /* #ifdef __WIN32__ */
#include <sys/time.h>
#ifdef NETDB_H_NEEDS_IN_H
@@ -315,9 +315,17 @@ static unsigned long one_value = 1;
#include <net/if.h>
+#ifdef HAVE_SCHED_H
+#include <sched.h>
+#endif
+
+#ifdef HAVE_SETNS_H
+#include <setns.h>
+#endif
+
/* SCTP support -- currently for UNIX platforms only: */
#undef HAVE_SCTP
-#if (!defined(__WIN32__) && defined(HAVE_SCTP_H))
+#if defined(HAVE_SCTP_H)
#include <netinet/sctp.h>
@@ -418,7 +426,7 @@ static int (*p_sctp_bindx)(int sd, struct sockaddr *addrs,
static int (*p_sctp_peeloff)(int sd, sctp_assoc_t assoc_id) = NULL;
#endif
-#endif /* SCTP supported */
+#endif /* #if defined(HAVE_SCTP_H) */
#ifndef WANT_NONBLOCKING
#define WANT_NONBLOCKING
@@ -512,7 +520,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
} while(0)
-#endif /* __WIN32__ */
+#endif /* #ifdef __WIN32__ #else */
#ifdef HAVE_SOCKLEN_T
# define SOCKLEN_T socklen_t
@@ -680,6 +688,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
#define INET_LOPT_TCP_SEND_TIMEOUT_CLOSE 35 /* auto-close on send timeout or not */
#define INET_LOPT_MSGQ_HIWTRMRK 36 /* set local msgq high watermark */
#define INET_LOPT_MSGQ_LOWTRMRK 37 /* set local msgq low watermark */
+#define INET_LOPT_NETNS 38 /* Network namespace pathname */
/* SCTP options: a separate range, from 100: */
#define SCTP_OPT_RTOINFO 100
#define SCTP_OPT_ASSOCINFO 101
@@ -955,6 +964,10 @@ typedef struct {
int is_ignored; /* if a fd is ignored by the inet_drv.
This flag should be set to true when
the fd is used outside of inet_drv. */
+#ifdef HAVE_SETNS
+ char *netns; /* Socket network namespace name
+ as full file path */
+#endif
} inet_descriptor;
@@ -1181,6 +1194,7 @@ static ErlDrvTermData am_dontroute;
static ErlDrvTermData am_priority;
static ErlDrvTermData am_tos;
static ErlDrvTermData am_ipv6_v6only;
+static ErlDrvTermData am_netns;
#endif
/* speical errors for bad ports and sequences */
@@ -3498,6 +3512,7 @@ static void inet_init_sctp(void) {
INIT_ATOM(priority);
INIT_ATOM(tos);
INIT_ATOM(ipv6_v6only);
+ INIT_ATOM(netns);
/* Option names */
INIT_ATOM(sctp_rtoinfo);
@@ -3908,12 +3923,81 @@ static int erl_inet_close(inet_descriptor* desc)
static ErlDrvSSizeT inet_ctl_open(inet_descriptor* desc, int domain, int type,
char** rbuf, ErlDrvSizeT rsize)
{
+ int save_errno;
+#ifdef HAVE_SETNS
+ int current_ns, new_ns;
+ current_ns = new_ns = 0;
+#endif
+ save_errno = 0;
+
if (desc->state != INET_STATE_CLOSED)
return ctl_xerror(EXBADSEQ, rbuf, rsize);
+
+#ifdef HAVE_SETNS
+ if (desc->netns != NULL) {
+ /* Temporarily change network namespace for this thread
+ * while creating the socket
+ */
+ current_ns = open("/proc/self/ns/net", O_RDONLY);
+ if (current_ns == INVALID_SOCKET)
+ return ctl_error(sock_errno(), rbuf, rsize);
+ new_ns = open(desc->netns, O_RDONLY);
+ if (new_ns == INVALID_SOCKET) {
+ save_errno = sock_errno();
+ while (close(current_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ return ctl_error(save_errno, rbuf, rsize);
+ }
+ if (setns(new_ns, CLONE_NEWNET) != 0) {
+ save_errno = sock_errno();
+ while (close(new_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ while (close(current_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ return ctl_error(save_errno, rbuf, rsize);
+ }
+ else {
+ while (close(new_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ }
+ }
+#endif
if ((desc->s = sock_open(domain, type, desc->sprotocol)) == INVALID_SOCKET)
- return ctl_error(sock_errno(), rbuf, rsize);
- if ((desc->event = sock_create_event(desc)) == INVALID_EVENT)
- return ctl_error(sock_errno(), rbuf, rsize);
+ save_errno = sock_errno();
+#ifdef HAVE_SETNS
+ if (desc->netns != NULL) {
+ /* Restore network namespace */
+ if (setns(current_ns, CLONE_NEWNET) != 0) {
+ /* XXX Failed to restore network namespace.
+ * What to do? Tidy up and return an error...
+ * Note that the thread now might still be in the namespace.
+ * Can this even happen? Should the emulator be aborted?
+ */
+ if (desc->s != INVALID_SOCKET)
+ save_errno = sock_errno();
+ while (close(desc->s) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ desc->s = INVALID_SOCKET;
+ while (close(current_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ return ctl_error(save_errno, rbuf, rsize);
+ }
+ else {
+ while (close(current_ns) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ }
+ }
+#endif
+ if (desc->s == INVALID_SOCKET)
+ return ctl_error(save_errno, rbuf, rsize);
+
+ if ((desc->event = sock_create_event(desc)) == INVALID_EVENT) {
+ save_errno = sock_errno();
+ while (close(desc->s) == INVALID_SOCKET &&
+ sock_errno() == EINTR);
+ desc->s = INVALID_SOCKET;
+ return ctl_error(save_errno, rbuf, rsize);
+ }
SET_NONBLOCKING(desc->s);
#ifdef __WIN32__
driver_select(desc->port, desc->event, ERL_DRV_READ, 1);
@@ -5529,6 +5613,20 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
}
continue;
+#ifdef HAVE_SETNS
+ case INET_LOPT_NETNS:
+ /* It is annoying that ival and len are both (signed) int */
+ if (ival < 0) return -1;
+ if (len < ival) return -1;
+ if (desc->netns != NULL) FREE(desc->netns);
+ desc->netns = ALLOC(((unsigned int) ival) + 1);
+ memcpy(desc->netns, ptr, ival);
+ desc->netns[ival] = '\0';
+ ptr += ival;
+ len -= ival;
+ continue;
+#endif
+
case INET_OPT_REUSEADDR:
#ifdef __WIN32__
continue; /* Bjorn says */
@@ -5858,6 +5956,21 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
res = 0;
continue;
+#ifdef HAVE_SETNS
+ case INET_LOPT_NETNS:
+ {
+ size_t ns_len;
+ ns_len = get_int32(curr); curr += 4;
+ CHKLEN(curr, ns_len);
+ if (desc->netns != NULL) FREE(desc->netns);
+ desc->netns = ALLOC(ns_len + 1);
+ memcpy(desc->netns, curr, ns_len);
+ desc->netns[ns_len] = '\0';
+ curr += ns_len;
+ }
+ continue;
+#endif
+
/* SCTP options and applicable generic INET options: */
case SCTP_OPT_RTOINFO:
@@ -6454,6 +6567,22 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
}
continue;
+#ifdef HAVE_SETNS
+ case INET_LOPT_NETNS:
+ if (desc->netns != NULL) {
+ size_t netns_len;
+ netns_len = strlen(desc->netns);
+ *ptr++ = opt;
+ put_int32(netns_len, ptr);
+ PLACE_FOR(netns_len, ptr);
+ memcpy(ptr, desc->netns, netns_len);
+ ptr += netns_len;
+ } else {
+ TRUNCATE_TO(0,ptr);
+ }
+ continue;
+#endif
+
case INET_OPT_PRIORITY:
#ifdef SO_PRIORITY
type = SO_PRIORITY;
@@ -6737,6 +6866,22 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
break;
}
+#ifdef HAVE_SETNS
+ case INET_LOPT_NETNS:
+ if (desc->netns != NULL) {
+ PLACE_FOR
+ (spec, i,
+ LOAD_ATOM_CNT + LOAD_BUF2BINARY_CNT + LOAD_TUPLE_CNT);
+ i = LOAD_ATOM (spec, i, am_netns);
+ i = LOAD_BUF2BINARY
+ (spec, i, desc->netns, strlen(desc->netns));
+ i = LOAD_TUPLE (spec, i, 2);
+ break;
+ }
+ else
+ continue; /* Ignore */
+#endif
+
/* SCTP and generic INET options: */
case SCTP_OPT_RTOINFO:
@@ -7458,6 +7603,10 @@ static ErlDrvSSizeT inet_subscribe(inet_descriptor* desc,
static void inet_stop(inet_descriptor* desc)
{
erl_inet_close(desc);
+#ifdef HAVE_SETNS
+ if (desc->netns != NULL)
+ FREE(desc->netns);
+#endif
FREE(desc);
}
@@ -7537,6 +7686,10 @@ static ErlDrvData inet_start(ErlDrvPort port, int size, int protocol)
desc->is_ignored = 0;
+#ifdef HAVE_SETNS
+ desc->netns = NULL;
+#endif
+
return (ErlDrvData)desc;
}
diff --git a/erts/emulator/test/scheduler_SUITE.erl b/erts/emulator/test/scheduler_SUITE.erl
index 8931562828..81539faa09 100644
--- a/erts/emulator/test/scheduler_SUITE.erl
+++ b/erts/emulator/test/scheduler_SUITE.erl
@@ -52,6 +52,7 @@
update_cpu_info/1,
sct_cmd/1,
sbt_cmd/1,
+ scheduler_threads/1,
scheduler_suspend/1,
reader_groups/1]).
@@ -66,7 +67,7 @@ all() ->
equal_with_part_time_max,
equal_and_high_with_part_time_max, equal_with_high,
equal_with_high_max, bound_process,
- {group, scheduler_bind}, scheduler_suspend,
+ {group, scheduler_bind}, scheduler_threads, scheduler_suspend,
reader_groups].
groups() ->
@@ -1039,7 +1040,66 @@ sbt_test(Config, CpuTCmd, ClBt, Bt, LP) ->
tuple_to_list(SB)),
?line stop_node(Node),
?line ok.
-
+
+scheduler_threads(Config) when is_list(Config) ->
+ SmpSupport = erlang:system_info(smp_support),
+ {Sched, SchedOnln, _} = get_sstate(Config, ""),
+ %% Configure half the number of both the scheduler threads and
+ %% the scheduler threads online.
+ {HalfSched, HalfSchedOnln} = case SmpSupport of
+ false -> {1,1};
+ true ->
+ {Sched div 2,
+ SchedOnln div 2}
+ end,
+ {HalfSched, HalfSchedOnln, _} = get_sstate(Config, "+SP 50:50"),
+ %% Use +S to configure 4x the number of scheduler threads and
+ %% 4x the number of scheduler threads online, but alter that
+ %% setting using +SP to 50% scheduler threads and 25% scheduler
+ %% threads online. The result should be 2x scheduler threads and
+ %% 1x scheduler threads online.
+ TwiceSched = case SmpSupport of
+ false -> 1;
+ true -> Sched*2
+ end,
+ FourSched = integer_to_list(Sched*4),
+ FourSchedOnln = integer_to_list(SchedOnln*4),
+ CombinedCmd1 = "+S "++FourSched++":"++FourSchedOnln++" +SP50:25",
+ {TwiceSched, SchedOnln, _} = get_sstate(Config, CombinedCmd1),
+ %% Now do the same test but with the +S and +SP options in the
+ %% opposite order, since order shouldn't matter.
+ CombinedCmd2 = "+SP50:25 +S "++FourSched++":"++FourSchedOnln,
+ {TwiceSched, SchedOnln, _} = get_sstate(Config, CombinedCmd2),
+ %% Apply two +SP options to make sure the second overrides the first
+ TwoCmd = "+SP 25:25 +SP 100:100",
+ {Sched, SchedOnln, _} = get_sstate(Config, TwoCmd),
+ %% Configure 50% of scheduler threads online only
+ {Sched, HalfSchedOnln, _} = get_sstate(Config, "+SP:50"),
+ %% Configure 2x scheduler threads only
+ {TwiceSched, SchedOnln, _} = get_sstate(Config, "+SP 200"),
+ %% Test resetting the scheduler counts
+ ResetCmd = "+S "++FourSched++":"++FourSchedOnln++" +S 0:0",
+ {Sched, SchedOnln, _} = get_sstate(Config, ResetCmd),
+ %% Test negative +S settings, but only for SMP-enabled emulators
+ case SmpSupport of
+ false -> ok;
+ true ->
+ SchedMinus1 = Sched-1,
+ SchedOnlnMinus1 = SchedOnln-1,
+ {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1"),
+ {Sched, SchedOnlnMinus1, _} = get_sstate(Config, "+S :-1"),
+ {SchedMinus1, SchedOnlnMinus1, _} = get_sstate(Config, "+S -1:-1")
+ end,
+ ok.
+
+get_sstate(Config, Cmd) ->
+ {ok, Node} = start_node(Config, Cmd),
+ [SState] = mcall(Node, [fun () ->
+ erlang:system_info(schedulers_state)
+ end]),
+ stop_node(Node),
+ SState.
+
scheduler_suspend(Config) when is_list(Config) ->
?line Dog = ?t:timetrap(?t:minutes(5)),
?line lists:foreach(fun (S) -> scheduler_suspend_test(Config, S) end,
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index e61ebe15f5..552afe295d 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -803,7 +803,6 @@ int main(int argc, char **argv)
case 'n':
case 'P':
case 'Q':
- case 'S':
case 't':
case 'T':
case 'R':
@@ -818,6 +817,19 @@ int main(int argc, char **argv)
add_Eargs(argv[i+1]);
i++;
break;
+ case 'S':
+ if (argv[i][2] == 'P') {
+ if (argv[i][3] != '\0')
+ goto the_default;
+ } else if (argv[i][2] != '\0')
+ goto the_default;
+ if (i+1 >= argc)
+ usage(argv[i]);
+ argv[i][0] = '-';
+ add_Eargs(argv[i]);
+ add_Eargs(argv[i+1]);
+ i++;
+ break;
case 'B':
argv[i][0] = '-';
if (argv[i][2] != '\0') {
@@ -1119,7 +1131,9 @@ usage_aux(void)
"[+l] [+M<SUBSWITCH> <ARGUMENT>] [+P MAX_PROCS] [+Q MAX_PORTS] "
"[+R COMPAT_REL] "
"[+r] [+rg READER_GROUPS_LIMIT] [+s SCHEDULER_OPTION] "
- "[+S NO_SCHEDULERS:NO_SCHEDULERS_ONLINE] [+T LEVEL] [+V] [+v] "
+ "[+S NO_SCHEDULERS:NO_SCHEDULERS_ONLINE] "
+ "[+SP PERCENTAGE_SCHEDULERS:PERCENTAGE_SCHEDULERS_ONLINE] "
+ "[+T LEVEL] [+V] [+v] "
"[+W<i|w>] [+z MISC_OPTION] [args ...]\n");
exit(1);
}
diff --git a/erts/preloaded/ebin/prim_inet.beam b/erts/preloaded/ebin/prim_inet.beam
index 8638ef677e..5b38871282 100644
--- a/erts/preloaded/ebin/prim_inet.beam
+++ b/erts/preloaded/ebin/prim_inet.beam
Binary files differ
diff --git a/erts/preloaded/src/prim_inet.erl b/erts/preloaded/src/prim_inet.erl
index fb1269cf91..fa621681f3 100644
--- a/erts/preloaded/src/prim_inet.erl
+++ b/erts/preloaded/src/prim_inet.erl
@@ -25,7 +25,7 @@
%% Primitive inet_drv interface
--export([open/3, fdopen/4, close/1]).
+-export([open/3, open/4, fdopen/4, close/1]).
-export([bind/3, listen/1, listen/2, peeloff/2]).
-export([connect/3, connect/4, async_connect/4]).
-export([accept/1, accept/2, async_accept/2]).
@@ -64,22 +64,31 @@
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
open(Protocol, Family, Type) ->
- open(Protocol, Family, Type, ?INET_REQ_OPEN, []).
+ open(Protocol, Family, Type, [], ?INET_REQ_OPEN, []).
+
+open(Protocol, Family, Type, Opts) ->
+ open(Protocol, Family, Type, Opts, ?INET_REQ_OPEN, []).
fdopen(Protocol, Family, Type, Fd) when is_integer(Fd) ->
- open(Protocol, Family, Type, ?INET_REQ_FDOPEN, ?int32(Fd)).
+ open(Protocol, Family, Type, [], ?INET_REQ_FDOPEN, ?int32(Fd)).
-open(Protocol, Family, Type, Req, Data) ->
+open(Protocol, Family, Type, Opts, Req, Data) ->
Drv = protocol2drv(Protocol),
AF = enc_family(Family),
T = enc_type(Type),
try erlang:open_port({spawn_driver,Drv}, [binary]) of
S ->
- case ctl_cmd(S, Req, [AF,T,Data]) of
- {ok,_} -> {ok,S};
- {error,_}=Error ->
+ case setopts(S, Opts) of
+ ok ->
+ case ctl_cmd(S, Req, [AF,T,Data]) of
+ {ok,_} -> {ok,S};
+ {error,_}=E1 ->
+ close(S),
+ E1
+ end;
+ {error,_}=E2 ->
close(S),
- Error
+ E2
end
catch
%% The only (?) way to get here is to try to open
@@ -1108,6 +1117,7 @@ enc_opt(send_timeout_close) -> ?INET_LOPT_TCP_SEND_TIMEOUT_CLOSE;
enc_opt(delay_send) -> ?INET_LOPT_TCP_DELAY_SEND;
enc_opt(packet_size) -> ?INET_LOPT_PACKET_SIZE;
enc_opt(read_packets) -> ?INET_LOPT_READ_PACKETS;
+enc_opt(netns) -> ?INET_LOPT_NETNS;
enc_opt(raw) -> ?INET_OPT_RAW;
% Names of SCTP opts:
enc_opt(sctp_rtoinfo) -> ?SCTP_OPT_RTOINFO;
@@ -1164,6 +1174,7 @@ dec_opt(?INET_LOPT_TCP_SEND_TIMEOUT_CLOSE) -> send_timeout_close;
dec_opt(?INET_LOPT_TCP_DELAY_SEND) -> delay_send;
dec_opt(?INET_LOPT_PACKET_SIZE) -> packet_size;
dec_opt(?INET_LOPT_READ_PACKETS) -> read_packets;
+dec_opt(?INET_LOPT_NETNS) -> netns;
dec_opt(?INET_OPT_RAW) -> raw;
dec_opt(I) when is_integer(I) -> undefined.
@@ -1261,6 +1272,7 @@ type_opt_1(send_timeout_close) -> bool;
type_opt_1(delay_send) -> bool;
type_opt_1(packet_size) -> uint;
type_opt_1(read_packets) -> uint;
+type_opt_1(netns) -> binary;
%%
%% SCTP options (to be set). If the type is a record type, the corresponding
%% record signature is returned, otherwise, an "elementary" type tag
@@ -1487,9 +1499,12 @@ type_value_2({bitenumlist,List,_}, EnumList) ->
Ls when is_list(Ls) -> true;
false -> false
end;
-type_value_2(binary,Bin) when is_binary(Bin) -> true;
-type_value_2(binary_or_uint,Bin) when is_binary(Bin) -> true;
-type_value_2(binary_or_uint,Int) when is_integer(Int), Int >= 0 -> true;
+type_value_2(binary,Bin)
+ when is_binary(Bin), byte_size(Bin) < (1 bsl 32) -> true;
+type_value_2(binary_or_uint,Bin)
+ when is_binary(Bin), byte_size(Bin) < (1 bsl 32) -> true;
+type_value_2(binary_or_uint,Int)
+ when is_integer(Int), Int >= 0 -> true;
%% Type-checking of SCTP options
type_value_2(sctp_assoc_id, X)
when X band 16#ffffffff =:= X -> true;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 01:17:17 +0000