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mapi: Use C11 thread abstractions.

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Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
This commit is contained in:
José Fonseca
2013-04-26 08:04:06 +01:00
parent fd33a6bcd7
commit 54876afcf0
1 changed files with 13 additions and 152 deletions
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165
src/mapi/u_thread.h
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@@ -46,12 +46,7 @@
#include <stdlib.h>
#include "u_compiler.h"
#if defined(HAVE_PTHREAD)
#include <pthread.h> /* POSIX threads headers */
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#include "c11/threads.h"
#if defined(HAVE_PTHREAD) || defined(_WIN32)
#ifndef THREADS
@@ -79,43 +74,32 @@ extern "C" {
#endif
/*
* POSIX threads. This should be your choice in the Unix world
* whenever possible. When building with POSIX threads, be sure
* to enable any compiler flags which will cause the MT-safe
* libc (if one exists) to be used when linking, as well as any
* header macros for MT-safe errno, etc. For Solaris, this is the -mt
* compiler flag. On Solaris with gcc, use -D_REENTRANT to enable
* proper compiling for MT-safe libc etc.
*/
#if defined(HAVE_PTHREAD)
struct u_tsd {
pthread_key_t key;
tss_t key;
unsigned initMagic;
};
typedef pthread_mutex_t u_mutex;
typedef mtx_t u_mutex;
#define u_mutex_declare_static(name) \
static u_mutex name = PTHREAD_MUTEX_INITIALIZER
static u_mutex name = _MTX_INITIALIZER_NP
#define u_mutex_init(name) pthread_mutex_init(&(name), NULL)
#define u_mutex_destroy(name) pthread_mutex_destroy(&(name))
#define u_mutex_lock(name) (void) pthread_mutex_lock(&(name))
#define u_mutex_unlock(name) (void) pthread_mutex_unlock(&(name))
#define u_mutex_init(name) mtx_init(&(name), mtx_plain)
#define u_mutex_destroy(name) mtx_destroy(&(name))
#define u_mutex_lock(name) (void) mtx_lock(&(name))
#define u_mutex_unlock(name) (void) mtx_unlock(&(name))
static INLINE unsigned long
u_thread_self(void)
{
return (unsigned long) pthread_self();
return (unsigned long) thrd_current();
}
static INLINE void
u_tsd_init(struct u_tsd *tsd)
{
if (pthread_key_create(&tsd->key, NULL/*free*/) != 0) {
if (tss_create(&tsd->key, NULL/*free*/) != 0) {
perror(INIT_TSD_ERROR);
exit(-1);
}
@@ -129,7 +113,7 @@ u_tsd_get(struct u_tsd *tsd)
if (tsd->initMagic != INIT_MAGIC) {
u_tsd_init(tsd);
}
return pthread_getspecific(tsd->key);
return tss_get(tsd->key);
}
@@ -139,56 +123,12 @@ u_tsd_set(struct u_tsd *tsd, void *ptr)
if (tsd->initMagic != INIT_MAGIC) {
u_tsd_init(tsd);
}
if (pthread_setspecific(tsd->key, ptr) != 0) {
if (tss_set(tsd->key, ptr) != 0) {
perror(SET_TSD_ERROR);
exit(-1);
}
}
#endif /* HAVE_PTHREAD */
/*
* Windows threads. Should work with Windows NT and 95.
* IMPORTANT: Link with multithreaded runtime library when THREADS are
* used!
*/
#ifdef _WIN32
struct u_tsd {
DWORD key;
unsigned initMagic;
};
typedef CRITICAL_SECTION u_mutex;
/* http://locklessinc.com/articles/pthreads_on_windows/ */
#define u_mutex_declare_static(name) \
static u_mutex name = {(PCRITICAL_SECTION_DEBUG)-1, -1, 0, 0, 0, 0}
#define u_mutex_init(name) InitializeCriticalSection(&name)
#define u_mutex_destroy(name) DeleteCriticalSection(&name)
#define u_mutex_lock(name) EnterCriticalSection(&name)
#define u_mutex_unlock(name) LeaveCriticalSection(&name)
static INLINE unsigned long
u_thread_self(void)
{
return GetCurrentThreadId();
}
static INLINE void
u_tsd_init(struct u_tsd *tsd)
{
tsd->key = TlsAlloc();
if (tsd->key == TLS_OUT_OF_INDEXES) {
perror(INIT_TSD_ERROR);
exit(-1);
}
tsd->initMagic = INIT_MAGIC;
}
static INLINE void
u_tsd_destroy(struct u_tsd *tsd)
@@ -196,90 +136,11 @@ u_tsd_destroy(struct u_tsd *tsd)
if (tsd->initMagic != INIT_MAGIC) {
return;
}
TlsFree(tsd->key);
tss_delete(tsd->key);
tsd->initMagic = 0x0;
}
static INLINE void *
u_tsd_get(struct u_tsd *tsd)
{
if (tsd->initMagic != INIT_MAGIC) {
u_tsd_init(tsd);
}
return TlsGetValue(tsd->key);
}
static INLINE void
u_tsd_set(struct u_tsd *tsd, void *ptr)
{
/* the following code assumes that the struct u_tsd has been initialized
to zero at creation */
if (tsd->initMagic != INIT_MAGIC) {
u_tsd_init(tsd);
}
if (TlsSetValue(tsd->key, ptr) == 0) {
perror(SET_TSD_ERROR);
exit(-1);
}
}
#endif /* _WIN32 */
/*
* THREADS not defined
*/
#ifndef THREADS
struct u_tsd {
unsigned initMagic;
};
typedef unsigned u_mutex;
#define u_mutex_declare_static(name) static u_mutex name = 0
#define u_mutex_init(name) (void) name
#define u_mutex_destroy(name) (void) name
#define u_mutex_lock(name) (void) name
#define u_mutex_unlock(name) (void) name
/*
* no-op functions
*/
static INLINE unsigned long
u_thread_self(void)
{
return 0;
}
static INLINE void
u_tsd_init(struct u_tsd *tsd)
{
(void) tsd;
}
static INLINE void *
u_tsd_get(struct u_tsd *tsd)
{
(void) tsd;
return NULL;
}
static INLINE void
u_tsd_set(struct u_tsd *tsd, void *ptr)
{
(void) tsd;
(void) ptr;
}
#endif /* THREADS */
#ifdef __cplusplus
}
#endif