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minor optimization for cacheing in of samples by using posix_fadvise

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1578 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-08-05 13:52:01 +00:00
parent 872951cca1
commit 41d67c40d9
1 changed files with 18 additions and 1 deletions
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19
src/pulsecore/sound-file.c
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@ -26,12 +26,16 @@
#endif
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sndfile.h>
#include <pulse/sample.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/core-error.h>
#include "sound-file.h"
#include "core-scache.h"
@ -49,6 +53,7 @@ int pa_sound_file_load(
size_t l;
sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames) = NULL;
void *ptr = NULL;
int fd;
pa_assert(fname);
pa_assert(ss);
@ -57,8 +62,20 @@ int pa_sound_file_load(
pa_memchunk_reset(chunk);
memset(&sfinfo, 0, sizeof(sfinfo));
if (!(sf = sf_open(fname, SFM_READ, &sfinfo))) {
if ((fd = open(fname, O_RDONLY|O_NOCTTY)) < 0) {
pa_log("Failed to open file %s: %s", fname, pa_cstrerror(errno));
goto finish;
}
if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL) < 0) {
pa_log_warn("POSIX_FADV_SEQUENTIAL failed: %s", pa_cstrerror(errno));
goto finish;
} else
pa_log_debug("POSIX_FADV_SEQUENTIAL succeeded.");
if (!(sf = sf_open_fd(fd, SFM_READ, &sfinfo, 1))) {
pa_log("Failed to open file %s", fname);
close(fd);
goto finish;
}