project-base/server-skynet-source-3rd-jemalloc
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Do not use syscall(2) on OS X 10.12 (deprecated).

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This commit is contained in:
Jason Evans 2016-11-02 19:18:33 -07:00
parent 795f6689de
commit d82f2b3473
4 changed files with 24 additions and 4 deletions
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17
configure.ac
View File

@ -1350,6 +1350,23 @@ if test "x${je_cv_mach_absolute_time}" = "xyes" ; then
AC_DEFINE([JEMALLOC_HAVE_MACH_ABSOLUTE_TIME]) AC_DEFINE([JEMALLOC_HAVE_MACH_ABSOLUTE_TIME])
fi fi
dnl Check if syscall(2) is usable. Treat warnings as errors, so that e.g. OS X
dnl 10.12's deprecation warning prevents use.
SAVED_CFLAGS="${CFLAGS}"
JE_CFLAGS_APPEND([-Werror])
JE_COMPILABLE([syscall(2)], [
#define _GNU_SOURCE
#include <sys/syscall.h>
#include <unistd.h>
], [
syscall(SYS_write, 2, "hello", 5);
],
[je_cv_syscall])
CFLAGS="${SAVED_CFLAGS}"
if test "x$je_cv_syscall" = "xyes" ; then
AC_DEFINE([JEMALLOC_HAVE_SYSCALL], [ ])
fi
dnl Check if the GNU-specific secure_getenv function exists. dnl Check if the GNU-specific secure_getenv function exists.
AC_CHECK_FUNC([secure_getenv], AC_CHECK_FUNC([secure_getenv],
[have_secure_getenv="1"], [have_secure_getenv="1"],

3
include/jemalloc/internal/jemalloc_internal_defs.h.in
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@ -71,6 +71,9 @@
*/ */
#undef JEMALLOC_OSSPIN #undef JEMALLOC_OSSPIN
/* Defined if syscall(2) is available. */
#undef JEMALLOC_HAVE_SYSCALL
/* /*
* Defined if secure_getenv(3) is available. * Defined if secure_getenv(3) is available.
*/ */

6
src/pages.c
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@ -219,7 +219,7 @@ os_overcommits_proc(void)
char buf[1]; char buf[1];
ssize_t nread; ssize_t nread;
#ifdef SYS_open #if defined(JEMALLOC_HAVE_SYSCALL) && defined(SYS_open)
fd = (int)syscall(SYS_open, "/proc/sys/vm/overcommit_memory", O_RDONLY); fd = (int)syscall(SYS_open, "/proc/sys/vm/overcommit_memory", O_RDONLY);
#else #else
fd = open("/proc/sys/vm/overcommit_memory", O_RDONLY); fd = open("/proc/sys/vm/overcommit_memory", O_RDONLY);
@ -227,13 +227,13 @@ os_overcommits_proc(void)
if (fd == -1) if (fd == -1)
return (false); /* Error. */ return (false); /* Error. */
#ifdef SYS_read #if defined(JEMALLOC_HAVE_SYSCALL) && defined(SYS_read)
nread = (ssize_t)syscall(SYS_read, fd, &buf, sizeof(buf)); nread = (ssize_t)syscall(SYS_read, fd, &buf, sizeof(buf));
#else #else
nread = read(fd, &buf, sizeof(buf)); nread = read(fd, &buf, sizeof(buf));
#endif #endif
#ifdef SYS_close #if defined(JEMALLOC_HAVE_SYSCALL) && defined(SYS_close)
syscall(SYS_close, fd); syscall(SYS_close, fd);
#else #else
close(fd); close(fd);

2
src/util.c
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@ -49,7 +49,7 @@ static void
wrtmessage(void *cbopaque, const char *s) wrtmessage(void *cbopaque, const char *s)
{ {
#ifdef SYS_write #if defined(JEMALLOC_HAVE_SYSCALL) && defined(SYS_write)
/* /*
* Use syscall(2) rather than write(2) when possible in order to avoid * Use syscall(2) rather than write(2) when possible in order to avoid
* the possibility of memory allocation within libc. This is necessary * the possibility of memory allocation within libc. This is necessary