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Refactor to use modern timerfd and epoll

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This is a major refactor of the original design by Flemming Madsen.  It
converts the library timers from poll() to timerfd, which at the same
time also unifies the file and timer watchers into one design.  The idea
is to also add signalfd to the mix later on.

Also a couple of hundred kilobytes smaller, although size a secondary
goal.  The primary goal is to further simplify the internal design and
to continuously strive to employ modern APIs.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson committed 2013-07-22 20:25:08 +02:00
1 parent 30f6eccecd
commit 499cbd2032
4 files changed
+208 -324
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test.c
+10 -10
View File
@@ -31,16 +31,16 @@
static int in, out;
static int period = 0;
static uev_timer_t *timer = NULL;
static uev_io_t *timer = NULL;
static void lifetime_cb(uev_t *ctx, uev_timer_t *w __attribute__ ((unused)), void *data)
static void lifetime_cb(uev_t *ctx, uev_io_t *w __attribute__ ((unused)), void *data)
{
fprintf(stderr, "\nLifetime exceeded %p\n", data);
uev_exit(ctx);
}
/* The pipe watchdog, if it triggers we haven't received data in time. */
static void timeout_cb(uev_t *ctx, uev_timer_t *w, void *data)
static void timeout_cb(uev_t *ctx, uev_io_t *w, void *data)
{
timer = NULL;
fprintf(stderr, "\nTimeout exceeded %p\n", data);
@@ -49,7 +49,7 @@ static void timeout_cb(uev_t *ctx, uev_timer_t *w, void *data)
uev_exit(ctx);
}
static void periodic_task(uev_t *ctx __attribute__ ((unused)), uev_timer_t *w __attribute__ ((unused)), void *data __attribute__ ((unused)))
static void periodic_task(uev_t *ctx __attribute__ ((unused)), uev_io_t *w __attribute__ ((unused)), void *data __attribute__ ((unused)))
{
fprintf(stderr, "|");
}
@@ -68,7 +68,7 @@ static void pipe_read_cb(uev_t *ctx, uev_io_t *w __attribute__ ((unused)), void
fprintf(stderr, "%.*s.%d ", cnt, msg, cnt);
}
static void pipe_write_cb(uev_t *ctx, uev_timer_t *w __attribute__ ((unused)), void *data)
static void pipe_write_cb(uev_t *ctx, uev_io_t *w __attribute__ ((unused)), void *data)
{
int cnt = (int)(intptr_t)data;
char *msg = "TESTING";
@@ -91,7 +91,7 @@ int main(void)
uev_t *ctx = uev_ctx_create();
/* Total program execution time */
uev_timer_create(ctx, (uev_timer_cb_t)lifetime_cb, (void *)(intptr_t)2, 4000, 0);
uev_timer_create(ctx, lifetime_cb, (void *)(intptr_t)2, 4000, 0);
/* Work load, one timer callback writes to a pipe periodically,
* and one I/O watcher that is called every time the pipe has
@@ -104,15 +104,15 @@ int main(void)
in = fd[0];
out = fd[1];
uev_timer_create(ctx, (uev_timer_cb_t)pipe_write_cb, (void *)(intptr_t)1, 400, 0);
uev_io_create(ctx, (uev_io_cb_t)pipe_read_cb, NULL, in, UEV_DIR_INBOUND);
uev_timer_create(ctx, pipe_write_cb, (void *)(intptr_t)1, 400, 0);
uev_io_create(ctx, pipe_read_cb, NULL, in, UEV_DIR_INBOUND);
/* Watchdog for the above timer callback, if it doesn't wake up
* and write to the pipe within a given deadline it will bark. */
timer = uev_timer_create(ctx, (uev_timer_cb_t)timeout_cb, (void *)(intptr_t)1, 950, 0);
timer = uev_timer_create(ctx, timeout_cb, (void *)(intptr_t)1, 950, 0);
/* Periodic background task */
uev_timer_create(ctx, (uev_timer_cb_t)periodic_task, NULL, 200, 200);
uev_timer_create(ctx, periodic_task, NULL, 200, 200);
/* Start event loop */
uev_run(ctx);