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ThreadNumber: fixed error.

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This commit is contained in:
Alexey Milovidov 2010-12-24 19:09:38 +00:00
parent e673533a0b
commit 623f5a7680
1 changed files with 10 additions and 1 deletions
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11
libs/libcommon/src/ThreadNumber.cpp
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@ -1,3 +1,6 @@
#include <pthread.h>
#include <Yandex/optimization.h>
#include <Yandex/ThreadNumber.h>
@ -6,7 +9,13 @@ unsigned threads = 0;
unsigned ThreadNumber::get()
{
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
if (unlikely(!thread_number))
thread_number = __sync_add_and_fetch(&threads, 1);
{
pthread_mutex_lock(&mutex);
if (likely(!thread_number))
thread_number = ++threads;
pthread_mutex_unlock(&mutex);
}
return thread_number;
}