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pipe: replace PIPE_BUF macro pa pa_pipe_buf call

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This should help portability to platforms that lack PIPE_BUF. Based on a
patch from Samuel Thibault.

See ticket #546
This commit is contained in:
Lennart Poettering 2009-08-01 01:59:58 +02:00
parent 0113e7282c
commit e5c2256e36
4 changed files with 23 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/modules/module-pipe-sink.c
View file

@ -122,7 +122,7 @@ static int process_render(struct userdata *u) {
pa_assert(u);
if (u->memchunk.length <= 0)
pa_sink_render(u->sink, PIPE_BUF, &u->memchunk);
pa_sink_render(u->sink, pa_pipe_buf(u->fd), &u->memchunk);
pa_assert(u->memchunk.length > 0);
@ -299,8 +299,8 @@ int pa__init(pa_module*m) {
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
pa_sink_set_max_request(u->sink, PIPE_BUF);
pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(PIPE_BUF, &u->sink->sample_spec));
pa_sink_set_max_request(u->sink, pa_pipe_buf(u->fd));
pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(pa_pipe_buf(u->fd), &u->sink->sample_spec));
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);

2
src/modules/module-pipe-source.c
View file

@ -142,7 +142,7 @@ static void thread_func(void *userdata) {
void *p;
if (!u->memchunk.memblock) {
u->memchunk.memblock = pa_memblock_new(u->core->mempool, PIPE_BUF);
u->memchunk.memblock = pa_memblock_new(u->core->mempool, pa_pipe_buf(u->fd));
u->memchunk.index = u->memchunk.length = 0;
}

16
src/pulsecore/core-util.c
View file

@ -2779,3 +2779,19 @@ char* pa_maybe_prefix_path(const char *path, const char *prefix) {
return pa_sprintf_malloc("%s" PA_PATH_SEP "%s", prefix, path);
}
size_t pa_pipe_buf(int fd) {
#ifdef _PC_PIPE_BUF
long n;
if ((n = fpathconf(fd, _PC_PIPE_BUF)) >= 0)
return (size_t) n;
#endif
#ifdef PIPE_BUF
return PIPE_BUF;
#else
return 4096;
#endif
}

3
src/pulsecore/core-util.h
View file

@ -236,4 +236,7 @@ char **pa_split_spaces_strv(const char *s);
char* pa_maybe_prefix_path(const char *path, const char *prefix);
/* Returns size of the specified pipe or 4096 on failure */
size_t pa_pipe_buf(int fd);
#endif