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Changed RM_CreateTimer to only call aePostFunction is existing aePostFunction isn't in flight

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Former-commit-id: 9954f5b4a48286d07fb876fd9579801365b6c237
This commit is contained in:
VivekSainiEQ 2021-01-14 01:14:09 +00:00 committed by John Sully
parent 84dc6401c7
commit cf122aa54d
1 changed files with 32 additions and 24 deletions
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56
src/module.cpp
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@ -5579,6 +5579,8 @@ void RM_SetClusterFlags(RedisModuleCtx *ctx, uint64_t flags) {
static rax *Timers; /* The radix tree of all the timers sorted by expire. */
long long aeTimer = -1; /* Main event loop (ae.c) timer identifier. */
bool aeTimerSet = false;/* Checks whether the main event loop timer is set
or if an aePostFunction is queued up that will set it */
typedef void (*RedisModuleTimerProc)(RedisModuleCtx *ctx, void *data);
@ -5668,32 +5670,38 @@ RedisModuleTimerID RM_CreateTimer(RedisModuleCtx *ctx, mstime_t period, RedisMod
}
}
aePostFunction(g_pserver->rgthreadvar[IDX_EVENT_LOOP_MAIN].el, [period, key]{
/* We need to install the main event loop timer if it's not already
* installed, or we may need to refresh its period if we just installed
* a timer that will expire sooner than any other else (i.e. the timer
* we just installed is the first timer in the Timers rax). */
if (aeTimer != -1) {
raxIterator ri;
raxStart(&ri,Timers);
raxSeek(&ri,"^",NULL,0);
raxNext(&ri);
if (memcmp(ri.key,&key,sizeof(key)) == 0) {
/* This is the first key, we need to re-install the timer according
* to the just added event. */
/* We need to install the main event loop timer if it's not already
* installed, or we may need to refresh its period if we just installed
* a timer that will expire sooner than any other else (i.e. the timer
* we just installed is the first timer in the Timers rax). */
bool isFirstExpiry = false;
if (raxSize(Timers) > 0){
raxIterator ri;
raxStart(&ri, Timers);
raxSeek(&ri,"^",NULL,0);
raxNext(&ri);
if (memcmp(ri.key,&key,sizeof(key)) == 0)
/* This is the first key, we need to re-install the timer according
* to the just added event. */
isFirstExpiry = true;
raxStop(&ri);
}
/* Now that either we know that we either need to refresh the period of the
* recently installed timer, or that there is no timer to begin with, we must post
* a function call to install the main event timer */
if (isFirstExpiry || !aeTimerSet){
aeTimerSet = true;
aePostFunction(g_pserver->rgthreadvar[IDX_EVENT_LOOP_MAIN].el, [period, isFirstExpiry]{
/* If we deemed that this timer required a reinstall, delete it before proceeding
* to the install */
if (isFirstExpiry)
aeDeleteTimeEvent(g_pserver->rgthreadvar[IDX_EVENT_LOOP_MAIN].el,aeTimer);
aeTimer = -1;
}
raxStop(&ri);
}
/* If we have no main timer (the old one was invalidated, or this is the
* first module timer we have), install one. */
if (aeTimer == -1) {
/* If we have no main timer (the old one was invalidated, or this is the
* first module timer we have), install one. */
aeTimer = aeCreateTimeEvent(g_pserver->rgthreadvar[IDX_EVENT_LOOP_MAIN].el,period,moduleTimerHandler,NULL,NULL);
}
});
});
}
return key;
}