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merge glitch-free branch back into trunk

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2445 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2008-05-15 23:34:41 +00:00
parent 91f092eadc
commit 045c1d602d
189 changed files with 12559 additions and 4959 deletions
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30
src/pulsecore/shm.c
View file

@ -42,6 +42,7 @@
#endif
#include <pulse/xmalloc.h>
#include <pulse/gccmacro.h>
#include <pulsecore/core-error.h>
#include <pulsecore/log.h>
@ -56,7 +57,7 @@
#define MADV_REMOVE 9
#endif
#define MAX_SHM_SIZE (PA_ALIGN(1024*1024*20))
#define MAX_SHM_SIZE (PA_ALIGN(1024*1024*64))
#ifdef __linux__
/* On Linux we know that the shared memory blocks are files in
@ -69,14 +70,15 @@
#define SHM_MARKER ((int) 0xbeefcafe)
/* We now put this SHM marker at the end of each segment. It's optional to not require a reboot when upgrading, though */
struct shm_marker {
/* We now put this SHM marker at the end of each segment. It's
* optional, to not require a reboot when upgrading, though */
struct shm_marker PA_GCC_PACKED {
pa_atomic_t marker; /* 0xbeefcafe */
pa_atomic_t pid;
void *_reserverd1;
void *_reserverd2;
void *_reserverd3;
void *_reserverd4;
uint64_t *_reserverd1;
uint64_t *_reserverd2;
uint64_t *_reserverd3;
uint64_t *_reserverd4;
};
static char *segment_name(char *fn, size_t l, unsigned id) {
@ -84,13 +86,13 @@ static char *segment_name(char *fn, size_t l, unsigned id) {
return fn;
}
int pa_shm_create_rw(pa_shm *m, size_t size, int shared, mode_t mode) {
int pa_shm_create_rw(pa_shm *m, size_t size, pa_bool_t shared, mode_t mode) {
char fn[32];
int fd = -1;
pa_assert(m);
pa_assert(size > 0);
pa_assert(size < MAX_SHM_SIZE);
pa_assert(size <= MAX_SHM_SIZE);
pa_assert(mode >= 0600);
/* Each time we create a new SHM area, let's first drop all stale
@ -122,7 +124,7 @@ int pa_shm_create_rw(pa_shm *m, size_t size, int shared, mode_t mode) {
m->ptr = pa_xmalloc(m->size);
#endif
m->do_unlink = 0;
m->do_unlink = FALSE;
} else {
#ifdef HAVE_SHM_OPEN
@ -155,7 +157,7 @@ int pa_shm_create_rw(pa_shm *m, size_t size, int shared, mode_t mode) {
pa_atomic_store(&marker->marker, SHM_MARKER);
pa_assert_se(close(fd) == 0);
m->do_unlink = 1;
m->do_unlink = TRUE;
#else
return -1;
#endif
@ -282,7 +284,9 @@ int pa_shm_attach_ro(pa_shm *m, unsigned id) {
goto fail;
}
if (st.st_size <= 0 || st.st_size > MAX_SHM_SIZE+PA_ALIGN(sizeof(struct shm_marker)) || PA_ALIGN(st.st_size) != st.st_size) {
if (st.st_size <= 0 ||
st.st_size > (off_t) (MAX_SHM_SIZE+PA_ALIGN(sizeof(struct shm_marker))) ||
PA_ALIGN((size_t) st.st_size) != (size_t) st.st_size) {
pa_log("Invalid shared memory segment size");
goto fail;
}
@ -371,7 +375,7 @@ int pa_shm_cleanup(void) {
/* Ok, the owner of this shms segment is dead, so, let's remove the segment */
segment_name(fn, sizeof(fn), id);
if (shm_unlink(fn) < 0 && errno != EACCES)
if (shm_unlink(fn) < 0 && errno != EACCES && errno != ENOENT)
pa_log_warn("Failed to remove SHM segment %s: %s\n", fn, pa_cstrerror(errno));
}