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优化 timer mutex

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源文雨
2022-10-24 22:34:39 +08:00
parent a610197bf5
commit 3fc9efe6b2
1 changed files with 6 additions and 16 deletions
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22
server.c
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@@ -20,10 +20,6 @@
#include "crypto.h"
#include "config.h"
#if !__APPLE__
#include <sys/sendfile.h>
#endif
#ifdef LISTEN_ON_IPV6
static socklen_t struct_len = sizeof(struct sockaddr_in6);
static struct sockaddr_in6 server_addr;
@@ -46,7 +42,7 @@ struct thread_timer_t {
pthread_mutex_t tmc;
pthread_rwlock_t mb;
uint8_t isbusy; // lock by mb
uint8_t hastimerslept; // lock by mb
uint8_t hastimerslept; // lock by tmc
uint8_t buf[BUFSIZ-sizeof(uint32_t)-sizeof(int)-sizeof(time_t)-sizeof(ssize_t)-sizeof(char*)-2*sizeof(pthread_t)-2*sizeof(pthread_cond_t)-2*sizeof(pthread_mutex_t)-sizeof(pthread_rwlock_t)-2*sizeof(uint8_t)];
};
typedef struct thread_timer_t thread_timer_t;
@@ -595,16 +591,12 @@ static void accept_timer(void *p) {
pthread_rwlock_unlock(&timer->mb);
if(!isbusy) {
pthread_mutex_lock(&timer->tmc);
pthread_rwlock_wrlock(&timer->mb);
timer->hastimerslept = 1;
pthread_rwlock_unlock(&timer->mb);
puts("Timer sleep");
pthread_cond_wait(&timer->tc, &timer->tmc);
timer->hastimerslept = 0;
pthread_mutex_unlock(&timer->tmc);
puts("Timer wake up");
pthread_rwlock_wrlock(&timer->mb);
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
sleep(MAXWAITSEC / 4);
}
if(is_dict_opening) touch_timer(p);
@@ -620,10 +612,10 @@ static void accept_timer(void *p) {
}
sleep(MAXWAITSEC / 4);
}
pthread_rwlock_wrlock(&timer->mb);
pthread_mutex_lock(&timer->tmc);
timer->timerthread = NULL;
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
pthread_mutex_unlock(&timer->tmc);
}
static void cleanup_thread(thread_timer_t* timer) {
@@ -882,9 +874,7 @@ static void accept_client(int fd) {
}
// start or wakeup timer thread
pthread_t thread = timer->timerthread;
pthread_rwlock_rdlock(&timer->mb);
uint8_t hastimerslept = timer->hastimerslept;
pthread_rwlock_unlock(&timer->mb);
if(!thread || pthread_kill(thread, 0)) {
printf("Creating timer thread...");
pthread_cond_init(&timer->tc, NULL);
@@ -896,9 +886,9 @@ static void accept_client(int fd) {
continue;
}
puts("succeeded");
pthread_rwlock_wrlock(&timer->mb);
pthread_mutex_lock(&timer->tmc);
timer->hastimerslept = 0;
pthread_rwlock_unlock(&timer->mb);
pthread_mutex_unlock(&timer->tmc);
} else if(hastimerslept) {
printf("Waking up timer thread...");
pthread_mutex_lock(&timer->tmc);