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Initialize mutex for crypt(3) statically

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Assuming that all platforms, where only `crypt` is available but
not `crypt_r`, are POSIX-base.
This commit is contained in:
Nobuyoshi Nakada 2022-03-16 18:51:34 +09:00
parent f91ea23324
commit 4d93b6299c
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GPG Key ID: 7CD2805BFA3770C6
1 changed files with 1 additions and 24 deletions
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25
string.c
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@ -10158,35 +10158,12 @@ rb_str_oct(VALUE str)
# include "ruby/atomic.h" # include "ruby/atomic.h"
static struct { static struct {
rb_atomic_t initialized;
rb_nativethread_lock_t lock; rb_nativethread_lock_t lock;
} crypt_mutex; } crypt_mutex = {PTHREAD_MUTEX_INITIALIZER};
static void
crypt_mutex_destroy(void)
{
RUBY_ASSERT_ALWAYS(crypt_mutex.initialized == 1);
rb_nativethread_lock_destroy(&crypt_mutex.lock);
crypt_mutex.initialized = 0;
}
static void static void
crypt_mutex_initialize(void) crypt_mutex_initialize(void)
{ {
rb_atomic_t i;
while ((i = RUBY_ATOMIC_CAS(crypt_mutex.initialized, 0, 2)) == 2);
switch (i) {
case 0:
rb_nativethread_lock_initialize(&crypt_mutex.lock);
atexit(crypt_mutex_destroy);
RUBY_ASSERT(crypt_mutex.initialized == 2);
RUBY_ATOMIC_CAS(crypt_mutex.initialized, 2, 1);
break;
case 1:
break;
default:
rb_bug("crypt_mutex.initialized: %d->%d", i, crypt_mutex.initialized);
}
} }
#endif #endif