romenskiy2012/jemalloc
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Fix threaded initialization and enable it on Linux.

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Reported by Mike Hommey.
This commit is contained in:
Jason Evans 2012-04-05 11:06:23 -07:00
parent f3ca7c8386
commit 02b231205e
2 changed files with 6 additions and 3 deletions
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1
configure.ac
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@ -228,6 +228,7 @@ case "${host}" in
CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
abi="elf"
AC_DEFINE([JEMALLOC_PURGE_MADVISE_DONTNEED], [ ])
AC_DEFINE([JEMALLOC_THREADED_INIT], [ ])
RPATH="-Wl,-rpath,"
;;
*-*-netbsd*)

8
src/jemalloc.c
View file

@ -36,13 +36,15 @@ static bool malloc_initialized = false;
#ifdef JEMALLOC_THREADED_INIT
/* Used to let the initializing thread recursively allocate. */
static pthread_t malloc_initializer = (unsigned long)0;
# define NO_INITIALIZER ((unsigned long)0)
# define INITIALIZER pthread_self()
# define IS_INITIALIZER (malloc_initializer == pthread_self())
static pthread_t malloc_initializer = NO_INITIALIZER;
#else
static bool malloc_initializer = false;
# define NO_INITIALIZER false
# define INITIALIZER true
# define IS_INITIALIZER malloc_initializer
static bool malloc_initializer = NO_INITIALIZER;
#endif
/* Used to avoid initialization races. */
@ -531,7 +533,7 @@ malloc_init_hard(void)
return (false);
}
#ifdef JEMALLOC_THREADED_INIT
if (IS_INITIALIZER == false) {
if (malloc_initializer != NO_INITIALIZER && IS_INITIALIZER == false) {
/* Busy-wait until the initializing thread completes. */
do {
malloc_mutex_unlock(&init_lock);