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use final glibc eventfd() instead of our homegrown syscall invocations

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This commit is contained in:
Lennart Poettering 2008-08-19 23:18:20 +02:00
parent 8e71787551
commit 6baec251d2
2 changed files with 14 additions and 37 deletions
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1
configure.ac
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@ -296,6 +296,7 @@ AC_CHECK_HEADERS([windows.h winsock2.h ws2tcpip.h])
AC_CHECK_HEADERS([sys/ioctl.h]) AC_CHECK_HEADERS([sys/ioctl.h])
AC_CHECK_HEADERS([byteswap.h]) AC_CHECK_HEADERS([byteswap.h])
AC_CHECK_HEADERS([sys/syscall.h]) AC_CHECK_HEADERS([sys/syscall.h])
AC_CHECK_HEADERS([sys/eventfd.h])
#### Typdefs, structures, etc. #### #### Typdefs, structures, etc. ####

50
src/pulsecore/fdsem.c
View file

@ -41,39 +41,15 @@
#include <pulsecore/pipe.h> #include <pulsecore/pipe.h>
#endif #endif
#ifdef __linux__ #ifdef HAVE_SYS_EVENTFD_H
#include <sys/eventfd.h>
#if !defined(__NR_eventfd) && defined(__i386__)
#define __NR_eventfd 323
#endif
#if !defined(__NR_eventfd) && defined(__x86_64__)
#define __NR_eventfd 284
#endif
#if !defined(__NR_eventfd) && defined(__arm__)
#define __NR_eventfd (__NR_SYSCALL_BASE+351)
#endif
#if !defined(SYS_eventfd) && defined(__NR_eventfd)
#define SYS_eventfd __NR_eventfd
#endif
#ifdef SYS_eventfd
#define HAVE_EVENTFD
static inline long eventfd(unsigned count) {
return syscall(SYS_eventfd, count);
}
#endif
#endif #endif
#include "fdsem.h" #include "fdsem.h"
struct pa_fdsem { struct pa_fdsem {
int fds[2]; int fds[2];
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
int efd; int efd;
#endif #endif
@ -85,8 +61,8 @@ pa_fdsem *pa_fdsem_new(void) {
f = pa_xmalloc(PA_ALIGN(sizeof(pa_fdsem)) + PA_ALIGN(sizeof(pa_fdsem_data))); f = pa_xmalloc(PA_ALIGN(sizeof(pa_fdsem)) + PA_ALIGN(sizeof(pa_fdsem_data)));
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if ((f->efd = eventfd(0)) >= 0) { if ((f->efd = eventfd(0, 0)) >= 0) {
pa_make_fd_cloexec(f->efd); pa_make_fd_cloexec(f->efd);
f->fds[0] = f->fds[1] = -1; f->fds[0] = f->fds[1] = -1;
} else } else
@ -116,7 +92,7 @@ pa_fdsem *pa_fdsem_open_shm(pa_fdsem_data *data, int event_fd) {
pa_assert(data); pa_assert(data);
pa_assert(event_fd >= 0); pa_assert(event_fd >= 0);
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
f = pa_xnew(pa_fdsem, 1); f = pa_xnew(pa_fdsem, 1);
f->efd = event_fd; f->efd = event_fd;
@ -134,11 +110,11 @@ pa_fdsem *pa_fdsem_new_shm(pa_fdsem_data *data, int* event_fd) {
pa_assert(data); pa_assert(data);
pa_assert(event_fd); pa_assert(event_fd);
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
f = pa_xnew(pa_fdsem, 1); f = pa_xnew(pa_fdsem, 1);
if ((f->efd = eventfd(0)) < 0) { if ((f->efd = eventfd(0, 0)) < 0) {
pa_xfree(f); pa_xfree(f);
return NULL; return NULL;
} }
@ -159,7 +135,7 @@ pa_fdsem *pa_fdsem_new_shm(pa_fdsem_data *data, int* event_fd) {
void pa_fdsem_free(pa_fdsem *f) { void pa_fdsem_free(pa_fdsem *f) {
pa_assert(f); pa_assert(f);
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if (f->efd >= 0) if (f->efd >= 0)
pa_close(f->efd); pa_close(f->efd);
#endif #endif
@ -178,7 +154,7 @@ static void flush(pa_fdsem *f) {
do { do {
char x[10]; char x[10];
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if (f->efd >= 0) { if (f->efd >= 0) {
uint64_t u; uint64_t u;
@ -211,7 +187,7 @@ void pa_fdsem_post(pa_fdsem *f) {
for (;;) { for (;;) {
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if (f->efd >= 0) { if (f->efd >= 0) {
uint64_t u = 1; uint64_t u = 1;
@ -247,7 +223,7 @@ void pa_fdsem_wait(pa_fdsem *f) {
char x[10]; char x[10];
ssize_t r; ssize_t r;
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if (f->efd >= 0) { if (f->efd >= 0) {
uint64_t u; uint64_t u;
@ -285,7 +261,7 @@ int pa_fdsem_try(pa_fdsem *f) {
int pa_fdsem_get(pa_fdsem *f) { int pa_fdsem_get(pa_fdsem *f) {
pa_assert(f); pa_assert(f);
#ifdef HAVE_EVENTFD #ifdef HAVE_SYS_EVENTFD_H
if (f->efd >= 0) if (f->efd >= 0)
return f->efd; return f->efd;
#endif #endif