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merge 'lennart' branch back into trunk.

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1971 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-10-28 19:13:50 +00:00
parent 6687dd0131
commit a67c21f093
294 changed files with 79057 additions and 11614 deletions
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62
src/pulsecore/flist.c
View file

@ -25,12 +25,14 @@
#include <config.h>
#endif
#include <assert.h>
#include <pulse/xmalloc.h>
#include <pulsecore/atomic.h>
#include <pulsecore/log.h>
#include <pulsecore/thread.h>
#include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include <pulsecore/core-util.h>
#include <pulsecore/macro.h>
#include "flist.h"
@ -90,21 +92,18 @@ enum {
};
struct cell {
pa_atomic_int_t state;
pa_atomic_t state;
void *data;
};
struct pa_flist {
struct cell *cells;
unsigned size;
pa_atomic_int_t length;
pa_atomic_int_t read_idx;
pa_atomic_int_t write_idx;
pa_atomic_t length;
pa_atomic_t read_idx;
pa_atomic_t write_idx;
};
static int is_power_of_two(unsigned size) {
return !(size & (size - 1));
}
#define PA_FLIST_CELLS(x) ((struct cell*) ((uint8_t*) (x) + PA_ALIGN(sizeof(struct pa_flist))))
pa_flist *pa_flist_new(unsigned size) {
pa_flist *l;
@ -112,12 +111,11 @@ pa_flist *pa_flist_new(unsigned size) {
if (!size)
size = FLIST_SIZE;
assert(is_power_of_two(size));
pa_assert(pa_is_power_of_two(size));
l = pa_xnew(pa_flist, 1);
l = pa_xmalloc0(PA_ALIGN(sizeof(pa_flist)) + (sizeof(struct cell) * size));
l->size = size;
l->cells = pa_xnew0(struct cell, size);
pa_atomic_store(&l->read_idx, 0);
pa_atomic_store(&l->write_idx, 0);
@ -131,32 +129,37 @@ static int reduce(pa_flist *l, int value) {
}
void pa_flist_free(pa_flist *l, pa_free_cb_t free_cb) {
assert(l);
pa_assert(l);
if (free_cb) {
struct cell *cells;
int len, idx;
cells = PA_FLIST_CELLS(l);
idx = reduce(l, pa_atomic_load(&l->read_idx));
len = pa_atomic_load(&l->length);
for (; len > 0; len--) {
if (pa_atomic_load(&l->cells[idx].state) == STATE_USED)
free_cb(l->cells[idx].data);
if (pa_atomic_load(&cells[idx].state) == STATE_USED)
free_cb(cells[idx].data);
idx = reduce(l, idx + 1);
}
}
pa_xfree(l->cells);
pa_xfree(l);
}
int pa_flist_push(pa_flist*l, void *p) {
int idx, len, n;
struct cell *cells;
assert(l);
assert(p);
pa_assert(l);
pa_assert(p);
cells = PA_FLIST_CELLS(l);
n = len = (int) l->size - pa_atomic_load(&l->length) + N_EXTRA_SCAN;
_Y;
@ -165,13 +168,13 @@ int pa_flist_push(pa_flist*l, void *p) {
for (; n > 0 ; n--) {
_Y;
if (pa_atomic_cmpxchg(&l->cells[idx].state, STATE_UNUSED, STATE_BUSY)) {
if (pa_atomic_cmpxchg(&cells[idx].state, STATE_UNUSED, STATE_BUSY)) {
_Y;
pa_atomic_inc(&l->write_idx);
_Y;
l->cells[idx].data = p;
cells[idx].data = p;
_Y;
pa_atomic_store(&l->cells[idx].state, STATE_USED);
pa_atomic_store(&cells[idx].state, STATE_USED);
_Y;
pa_atomic_inc(&l->length);
return 0;
@ -183,7 +186,7 @@ int pa_flist_push(pa_flist*l, void *p) {
#ifdef PROFILE
if (len > N_EXTRA_SCAN)
pa_log("WARNING: Didn't find free cell after %u iterations.", len);
pa_log_warn("Didn't find free cell after %u iterations.", len);
#endif
return -1;
@ -191,8 +194,11 @@ int pa_flist_push(pa_flist*l, void *p) {
void* pa_flist_pop(pa_flist*l) {
int idx, len, n;
struct cell *cells;
assert(l);
pa_assert(l);
cells = PA_FLIST_CELLS(l);
n = len = pa_atomic_load(&l->length) + N_EXTRA_SCAN;
_Y;
@ -201,14 +207,14 @@ void* pa_flist_pop(pa_flist*l) {
for (; n > 0 ; n--) {
_Y;
if (pa_atomic_cmpxchg(&l->cells[idx].state, STATE_USED, STATE_BUSY)) {
if (pa_atomic_cmpxchg(&cells[idx].state, STATE_USED, STATE_BUSY)) {
void *p;
_Y;
pa_atomic_inc(&l->read_idx);
_Y;
p = l->cells[idx].data;
p = cells[idx].data;
_Y;
pa_atomic_store(&l->cells[idx].state, STATE_UNUSED);
pa_atomic_store(&cells[idx].state, STATE_UNUSED);
_Y;
pa_atomic_dec(&l->length);
@ -221,7 +227,7 @@ void* pa_flist_pop(pa_flist*l) {
#ifdef PROFILE
if (len > N_EXTRA_SCAN)
pa_log("WARNING: Didn't find used cell after %u iterations.", len);
pa_log_warn("Didn't find used cell after %u iterations.", len);
#endif
return NULL;