#include "dropin.h"
#include "event.h"
#include "net.h"
+#include "splay_tree.h"
#include "utils.h"
+#include "xalloc.h"
+event_loop_t *loop;
struct timeval now;
-static fd_set readfds;
-static fd_set writefds;
-static volatile bool running;
-
static int io_compare(const io_t *a, const io_t *b) {
return a->fd - b->fd;
}
return 0;
}
-static splay_tree_t io_tree = {.compare = (splay_compare_t)io_compare};
-static splay_tree_t timeout_tree = {.compare = (splay_compare_t)timeout_compare};
-
-void io_add(io_t *io, io_cb_t cb, void *data, int fd, int flags) {
+void io_add(event_loop_t *loop, io_t *io, io_cb_t cb, void *data, int fd, int flags) {
if(io->cb)
return;
io->data = data;
io->node.data = io;
- io_set(io, flags);
+ io_set(loop, io, flags);
- if(!splay_insert_node(&io_tree, &io->node))
+ if(!splay_insert_node(&loop->ios, &io->node))
abort();
}
-void io_set(io_t *io, int flags) {
+void io_set(event_loop_t *loop, io_t *io, int flags) {
io->flags = flags;
if(flags & IO_READ)
- FD_SET(io->fd, &readfds);
+ FD_SET(io->fd, &loop->readfds);
else
- FD_CLR(io->fd, &readfds);
+ FD_CLR(io->fd, &loop->readfds);
if(flags & IO_WRITE)
- FD_SET(io->fd, &writefds);
+ FD_SET(io->fd, &loop->writefds);
else
- FD_CLR(io->fd, &writefds);
+ FD_CLR(io->fd, &loop->writefds);
}
-void io_del(io_t *io) {
+void io_del(event_loop_t *loop, io_t *io) {
if(!io->cb)
return;
- io_set(io, 0);
+ io_set(loop, io, 0);
- splay_unlink_node(&io_tree, &io->node);
+ splay_unlink_node(&loop->ios, &io->node);
io->cb = NULL;
}
-void timeout_add(timeout_t *timeout, timeout_cb_t cb, void *data, struct timeval *tv) {
+void timeout_add(event_loop_t *loop, timeout_t *timeout, timeout_cb_t cb, void *data, struct timeval *tv) {
timeout->cb = cb;
timeout->data = data;
timeout->node.data = timeout;
- timeout_set(timeout, tv);
+ timeout_set(loop, timeout, tv);
}
-void timeout_set(timeout_t *timeout, struct timeval *tv) {
+void timeout_set(event_loop_t *loop, timeout_t *timeout, struct timeval *tv) {
if(timerisset(&timeout->tv))
- splay_unlink_node(&timeout_tree, &timeout->node);
+ splay_unlink_node(&loop->timeouts, &timeout->node);
- if(!now.tv_sec)
- gettimeofday(&now, NULL);
+ if(!loop->now.tv_sec)
+ gettimeofday(&loop->now, NULL);
- timeradd(&now, tv, &timeout->tv);
+ timeradd(&loop->now, tv, &timeout->tv);
- if(!splay_insert_node(&timeout_tree, &timeout->node))
+ if(!splay_insert_node(&loop->timeouts, &timeout->node))
abort();
}
-void timeout_del(timeout_t *timeout) {
+void timeout_del(event_loop_t *loop, timeout_t *timeout) {
if(!timeout->cb)
return;
- splay_unlink_node(&timeout_tree, &timeout->node);
+ splay_unlink_node(&loop->timeouts, &timeout->node);
timeout->cb = 0;
timeout->tv = (struct timeval){0, 0};
}
-#ifndef HAVE_MINGW
static int signal_compare(const signal_t *a, const signal_t *b) {
- return a->signum - b->signum;
-}
-
-static io_t signalio;
-static int pipefd[2] = {-1, -1};
-static splay_tree_t signal_tree = {.compare = (splay_compare_t)signal_compare};
-
-static void signal_handler(int signum) {
- unsigned char num = signum;
- write(pipefd[1], &num, 1);
+ return (int)a->signum - (int)b->signum;
}
-static void signalio_handler(void *data, int flags) {
+static void signalio_handler(event_loop_t *loop, void *data, int flags) {
unsigned char signum;
- if(read(pipefd[0], &signum, 1) != 1)
+ if(read(loop->pipefd[0], &signum, 1) != 1)
return;
- signal_t *sig = splay_search(&signal_tree, &((signal_t){.signum = signum}));
+ signal_t *sig = splay_search(&loop->signals, &((signal_t){.signum = signum}));
if(sig)
- sig->cb(sig->data);
+ sig->cb(loop, sig->data);
}
-static void pipe_init(void) {
- if(!pipe(pipefd))
- io_add(&signalio, signalio_handler, NULL, pipefd[0], IO_READ);
+static void pipe_init(event_loop_t *loop) {
+ if(!pipe(loop->pipefd))
+ io_add(loop, &loop->signalio, signalio_handler, NULL, loop->pipefd[0], IO_READ);
}
-void signal_add(signal_t *sig, signal_cb_t cb, void *data, int signum) {
+void signal_add(event_loop_t *loop, signal_t *sig, signal_cb_t cb, void *data, uint8_t signum) {
if(sig->cb)
return;
sig->signum = signum;
sig->node.data = sig;
- if(pipefd[0] == -1)
- pipe_init();
-
- signal(sig->signum, signal_handler);
+ if(loop->pipefd[0] == -1)
+ pipe_init(loop);
- if(!splay_insert_node(&signal_tree, &sig->node))
+ if(!splay_insert_node(&loop->signals, &sig->node))
abort();
}
-void signal_del(signal_t *sig) {
+void signal_del(event_loop_t *loop, signal_t *sig) {
if(!sig->cb)
return;
- signal(sig->signum, SIG_DFL);
-
- splay_unlink_node(&signal_tree, &sig->node);
+ splay_unlink_node(&loop->signals, &sig->node);
sig->cb = NULL;
}
-#endif
-bool event_loop(void) {
- running = true;
+bool event_loop_run(event_loop_t *loop) {
+ loop->running = true;
fd_set readable;
fd_set writable;
- while(running) {
- gettimeofday(&now, NULL);
+ while(loop->running) {
+ gettimeofday(&loop->now, NULL);
+ now = loop->now;
struct timeval diff, *tv = NULL;
- while(timeout_tree.head) {
- timeout_t *timeout = timeout_tree.head->data;
- timersub(&timeout->tv, &now, &diff);
+ while(loop->timeouts.head) {
+ timeout_t *timeout = loop->timeouts.head->data;
+ timersub(&timeout->tv, &loop->now, &diff);
if(diff.tv_sec < 0) {
- timeout->cb(timeout->data);
- if(timercmp(&timeout->tv, &now, <))
- timeout_del(timeout);
+ timeout->cb(loop, timeout->data);
+ if(timercmp(&timeout->tv, &loop->now, <))
+ timeout_del(loop, timeout);
} else {
tv = &diff;
break;
}
}
- memcpy(&readable, &readfds, sizeof readable);
- memcpy(&writable, &writefds, sizeof writable);
+ memcpy(&readable, &loop->readfds, sizeof readable);
+ memcpy(&writable, &loop->writefds, sizeof writable);
int fds = 0;
- if(io_tree.tail) {
- io_t *last = io_tree.tail->data;
+ if(loop->ios.tail) {
+ io_t *last = loop->ios.tail->data;
fds = last->fd + 1;
}
-#ifdef HAVE_MINGW
- LeaveCriticalSection(&mutex);
-#endif
int n = select(fds, &readable, &writable, NULL, tv);
-#ifdef HAVE_MINGW
- EnterCriticalSection(&mutex);
-#endif
if(n < 0) {
if(sockwouldblock(errno))
if(!n)
continue;
- for splay_each(io_t, io, &io_tree) {
+ for splay_each(io_t, io, &loop->ios) {
if(FD_ISSET(io->fd, &writable))
- io->cb(io->data, IO_WRITE);
+ io->cb(loop, io->data, IO_WRITE);
else if(FD_ISSET(io->fd, &readable))
- io->cb(io->data, IO_READ);
+ io->cb(loop, io->data, IO_READ);
}
}
return true;
}
-void event_flush_output(void) {
- for splay_each(io_t, io, &io_tree)
- if(FD_ISSET(io->fd, &writefds))
- io->cb(io->data, IO_WRITE);
+void event_flush_output(event_loop_t *loop) {
+ for splay_each(io_t, io, &loop->ios)
+ if(FD_ISSET(io->fd, &loop->writefds))
+ io->cb(loop, io->data, IO_WRITE);
+}
+
+void event_loop_stop(event_loop_t *loop) {
+ loop->running = false;
+}
+
+void event_loop_init(event_loop_t *loop) {
+ loop->ios.compare = (splay_compare_t)io_compare;
+ loop->timeouts.compare = (splay_compare_t)timeout_compare;
+ loop->signals.compare = (splay_compare_t)signal_compare;
+ loop->pipefd[0] = -1;
+ loop->pipefd[1] = -1;
}
-void event_exit(void) {
- running = false;
+void event_loop_exit(event_loop_t *loop) {
+ for splay_each(io_t, io, &loop->ios)
+ splay_free_node(&loop->ios, node);
+ for splay_each(timeout_t, timeout, &loop->timeouts)
+ splay_free_node(&loop->timeouts, node);
+ for splay_each(signal_t, signal, &loop->signals)
+ splay_free_node(&loop->signals, node);
}
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