diff options
| author | Lennart Poettering <lennart@poettering.net> | 2007-09-12 22:57:29 +0000 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2007-09-12 22:57:29 +0000 |
| commit | ef83a195251271f59feda68dba20b53d1634402f (patch) | |
| tree | 75e5c1a9fbdb93aa058afaab8792e88e53da9c33 /src/pulsecore/rtpoll.h | |
| parent | cf3e9da9dd8c2d69ffdbfcaafa354e9e85a9f871 (diff) | |
extend rtpoll API to allow registration of arbitray functions to be executed in the event loop. Add priority system for specifying the order of these functions.
git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1816 fefdeb5f-60dc-0310-8127-8f9354f1896f
Diffstat (limited to 'src/pulsecore/rtpoll.h')
| -rw-r--r-- | src/pulsecore/rtpoll.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/pulsecore/rtpoll.h b/src/pulsecore/rtpoll.h index f393f918..bef9eedb 100644 --- a/src/pulsecore/rtpoll.h +++ b/src/pulsecore/rtpoll.h @@ -26,6 +26,7 @@ #include <poll.h> #include <sys/types.h> +#include <limits.h> #include <pulse/sample.h> #include <pulsecore/asyncmsgq.h> @@ -53,9 +54,17 @@ typedef struct pa_rtpoll pa_rtpoll; typedef struct pa_rtpoll_item pa_rtpoll_item; +typedef enum pa_rtpoll_priority { + PA_RTPOLL_EARLY = -100, /* For veeery important stuff, like handling control messages */ + PA_RTPOLL_NORMAL = 0, /* For normal stuff */ + PA_RTPOLL_LATE = +100, /* For housekeeping */ + PA_RTPOLL_NEVER = INT_MAX, /* For stuff that doesn't register any callbacks, but only fds to listen on */ +} pa_rtpoll_priority_t; + pa_rtpoll *pa_rtpoll_new(void); void pa_rtpoll_free(pa_rtpoll *p); +/* Install the rtpoll in the current thread */ void pa_rtpoll_install(pa_rtpoll *p); /* Sleep on the rtpoll until the time event, or any of the fd events @@ -68,7 +77,8 @@ void pa_rtpoll_set_timer_periodic(pa_rtpoll *p, pa_usec_t usec); void pa_rtpoll_set_timer_relative(pa_rtpoll *p, pa_usec_t usec); void pa_rtpoll_set_timer_disabled(pa_rtpoll *p); -pa_rtpoll_item *pa_rtpoll_item_new(pa_rtpoll *p, unsigned n_fds); +/* A new fd wakeup item for pa_rtpoll */ +pa_rtpoll_item *pa_rtpoll_item_new(pa_rtpoll *p, pa_rtpoll_priority_t prio, unsigned n_fds); void pa_rtpoll_item_free(pa_rtpoll_item *i); /* Please note that this pointer might change on every call and when @@ -76,12 +86,18 @@ void pa_rtpoll_item_free(pa_rtpoll_item *i); * using the pointer and don't save the result anywhere */ struct pollfd *pa_rtpoll_item_get_pollfd(pa_rtpoll_item *i, unsigned *n_fds); +/* Set the callback that shall be called immediately before entering + * the sleeping poll: If the callback returns a negative value, the + * poll is skipped. */ void pa_rtpoll_item_set_before_callback(pa_rtpoll_item *i, int (*before_cb)(pa_rtpoll_item *i)); + +/* Set the callback that shall be called immediately after having + * entered the sleeping poll */ void pa_rtpoll_item_set_after_callback(pa_rtpoll_item *i, void (*after_cb)(pa_rtpoll_item *i)); void pa_rtpoll_item_set_userdata(pa_rtpoll_item *i, void *userdata); void* pa_rtpoll_item_get_userdata(pa_rtpoll_item *i); -pa_rtpoll_item *pa_rtpoll_item_new_fdsem(pa_rtpoll *p, pa_fdsem *s); -pa_rtpoll_item *pa_rtpoll_item_new_asyncmsgq(pa_rtpoll *p, pa_asyncmsgq *q); +pa_rtpoll_item *pa_rtpoll_item_new_fdsem(pa_rtpoll *p, pa_rtpoll_priority_t prio, pa_fdsem *s); +pa_rtpoll_item *pa_rtpoll_item_new_asyncmsgq(pa_rtpoll *p, pa_rtpoll_priority_t prio, pa_asyncmsgq *q); #endif |