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libcork: use API where supported (#860)

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- The usage of `pthread_setname_np` is not supported on versions of
  glibc earlier than 2.12. This patch checks the glibc MINOR version and
  only uses that API where supported.
- This will suppress undeclared function warning when compiling
  with uClibc/musl-libc.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
This commit is contained in:
Syrone Wong
2016-09-30 18:33:26 -05:00
committed by Max Lv
parent c29099df3f
commit e0d6dd8f3c
1 changed files with 6 additions and 3 deletions
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libcork/pthreads/thread.c
+6 -3
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@@ -169,7 +169,7 @@ cork_thread_start(struct cork_thread *self)
{
int rc;
pthread_t thread_id;
#if defined(__linux)
#if defined(__linux) && ((__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 12))
char thread_name[PTHREADS_MAX_THREAD_NAME_LENGTH];
#endif
@@ -181,8 +181,11 @@ cork_thread_start(struct cork_thread *self)
return -1;
}
#if defined(__linux)
/* On Linux we choose which thread to name via an explicit thread ID. */
#if defined(__linux) && ((__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 12))
/* On Linux we choose which thread to name via an explicit thread ID.
* However, pthread_setname_np() isn't supported on versions of glibc
* earlier than 2.12. So we need to check for a MINOR version of 12 or
* higher. */
strncpy(thread_name, self->name, PTHREADS_MAX_THREAD_NAME_LENGTH);
thread_name[PTHREADS_MAX_THREAD_NAME_LENGTH - 1] = '\0';
pthread_setname_np(thread_id, thread_name);