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introduce pa_xmalloc() and friends

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implement module auto loading


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@103 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-08-04 16:39:30 +00:00
parent 24291aff27
commit 46091a9237
61 changed files with 700 additions and 631 deletions
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88
polyp/module.c
View file

@ -31,6 +31,21 @@
#include <errno.h>
#include "module.h"
#include "xmalloc.h"
#define UNLOAD_POLL_TIME 10
static void timeout_callback(struct pa_mainloop_api *m, void *id, const struct timeval *tv, void *userdata) {
struct pa_core *c = userdata;
struct timeval ntv;
assert(c && c->mainloop == m && c->auto_unload_mainloop_source == id);
pa_module_unload_unused(c);
gettimeofday(&ntv, NULL);
ntv.tv_sec += UNLOAD_POLL_TIME;
m->enable_time(m, id, &ntv);
}
struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char *argument) {
struct pa_module *m = NULL;
@ -38,11 +53,10 @@ struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char
assert(c && name);
m = malloc(sizeof(struct pa_module));
assert(m);
m = pa_xmalloc(sizeof(struct pa_module));
m->name = strdup(name);
m->argument = argument ? strdup(argument) : NULL;
m->name = pa_xstrdup(name);
m->argument = pa_xstrdup(argument);
if (!(m->dl = lt_dlopenext(name)))
goto fail;
@ -55,6 +69,8 @@ struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char
m->userdata = NULL;
m->core = c;
m->n_used = -1;
m->auto_unload = 0;
assert(m->init);
if (m->init(c, m) < 0)
@ -62,6 +78,14 @@ struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char
if (!c->modules)
c->modules = pa_idxset_new(NULL, NULL);
if (!c->auto_unload_mainloop_source) {
struct timeval ntv;
gettimeofday(&ntv, NULL);
ntv.tv_sec += UNLOAD_POLL_TIME;
c->auto_unload_mainloop_source = c->mainloop->source_time(c->mainloop, &ntv, timeout_callback, c);
}
assert(c->auto_unload_mainloop_source);
assert(c->modules);
r = pa_idxset_put(c->modules, m, &m->index);
@ -73,13 +97,13 @@ struct pa_module* pa_module_load(struct pa_core *c, const char *name, const char
fail:
if (m) {
free(m->argument);
free(m->name);
pa_xfree(m->argument);
pa_xfree(m->name);
if (m->dl)
lt_dlclose(m->dl);
free(m);
pa_xfree(m);
}
return NULL;
@ -93,9 +117,9 @@ static void pa_module_free(struct pa_module *m) {
fprintf(stderr, "module: unloaded %u \"%s\".\n", m->index, m->name);
free(m->name);
free(m->argument);
free(m);
pa_xfree(m->name);
pa_xfree(m->argument);
pa_xfree(m);
}
@ -134,6 +158,34 @@ void pa_module_unload_all(struct pa_core *c) {
pa_idxset_free(c->modules, free_callback, NULL);
c->modules = NULL;
if (c->auto_unload_mainloop_source)
c->mainloop->cancel_time(c->mainloop, c->auto_unload_mainloop_source);
c->auto_unload_mainloop_source = NULL;
}
static int unused_callback(void *p, uint32_t index, int *del, void *userdata) {
struct pa_module *m = p;
time_t *now = userdata;
assert(p && del && now);
if (m->n_used == 0 && m->auto_unload && m->last_used_time+m->core->auto_unload_time <= *now) {
pa_module_free(m);
*del = 1;
}
return 0;
}
void pa_module_unload_unused(struct pa_core *c) {
time_t now;
assert(c);
if (!c->modules)
return;
time(&now);
pa_idxset_foreach(c->modules, unused_callback, &now);
}
struct once_info {
@ -141,21 +193,29 @@ struct once_info {
uint32_t index;
};
static void module_unload_once_callback(void *userdata) {
struct once_info *i = userdata;
assert(i);
pa_module_unload_by_index(i->core, i->index);
free(i);
pa_xfree(i);
}
void pa_module_unload_request(struct pa_core *c, struct pa_module *m) {
struct once_info *i;
assert(c && m);
i = malloc(sizeof(struct once_info));
assert(i);
i = pa_xmalloc(sizeof(struct once_info));
i->core = c;
i->index = m->index;
pa_mainloop_api_once(c->mainloop, module_unload_once_callback, i);
}
void pa_module_set_used(struct pa_module*m, int used) {
assert(m);
if (m->n_used != used && used == 0)
time(&m->last_used_time);
m->n_used = used;
}