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Modules: AbortBlock() API implemented.

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This commit is contained in:
antirez 2016-10-13 16:57:40 +02:00
parent 58601c8f7d
commit 95c17c0cb2
3 changed files with 12 additions and 1 deletions
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10
src/module.c
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@ -3140,6 +3140,13 @@ int RM_UnblockClient(RedisModuleBlockedClient *bc, void *privdata) {
return REDISMODULE_OK;
}
/* Abort a blocked client blocking operation: the client will be unblocked
* without firing the reply callback. */
int RM_AbortBlock(RedisModuleBlockedClient *bc) {
bc->reply_callback = NULL;
return RM_UnblockClient(bc,NULL);
}
/* This function will check the moduleUnblockedClients queue in order to
* call the reply callback and really unblock the client.
*
@ -3163,7 +3170,7 @@ void moduleHandleBlockedClients(void) {
/* Release the lock during the loop, as long as we don't
* touch the shared list. */
if (c != NULL) {
if (c != NULL && bc->reply_callback != NULL) {
RedisModuleCtx ctx = REDISMODULE_CTX_INIT;
ctx.flags |= REDISMODULE_CTX_BLOCKED_REPLY;
ctx.blocked_privdata = bc->privdata;
@ -3545,5 +3552,6 @@ void moduleRegisterCoreAPI(void) {
REGISTER_API(IsBlockedReplyRequest);
REGISTER_API(IsBlockedTimeoutRequest);
REGISTER_API(GetBlockedClientPrivateData);
REGISTER_API(AbortBlock);
REGISTER_API(Milliseconds);
}

1
src/modules/INTRO.md
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@ -6,6 +6,7 @@ The modules documentation is composed of the following files:
* `INTRO.md` (this file). An overview about Redis Modules system and API. It's a good idea to start your reading here.
* `API.md` is generated from module.c top comments of RedisMoule functions. It is a good reference in order to understand how each function works.
* `TYPES.md` covers the implementation of native data types into modules.
* `BLOCK.md` shows how to write blocking commands that will not reply immediately, but will block the client, without blocking the Redis server, and will provide a reply whenever will be possible.
Redis modules make possible to extend Redis functionality using external
modules, implementing new Redis commands at a speed and with features

2
src/redismodule.h
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@ -200,6 +200,7 @@ int REDISMODULE_API_FUNC(RedisModule_UnblockClient)(RedisModuleBlockedClient *bc
int REDISMODULE_API_FUNC(RedisModule_IsBlockedReplyRequest)(RedisModuleCtx *ctx);
int REDISMODULE_API_FUNC(RedisModule_IsBlockedTimeoutRequest)(RedisModuleCtx *ctx);
void *REDISMODULE_API_FUNC(RedisModule_GetBlockedClientPrivateData)(RedisModuleCtx *ctx);
int REDISMODULE_API_FUNC(RedisModule_AbortBlock)(RedisModuleBlockedClient *bc);
long long REDISMODULE_API_FUNC(RedisModule_Milliseconds)(void);
/* This is included inline inside each Redis module. */
@ -307,6 +308,7 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
REDISMODULE_GET_API(IsBlockedReplyRequest);
REDISMODULE_GET_API(IsBlockedTimeoutRequest);
REDISMODULE_GET_API(GetBlockedClientPrivateData);
REDISMODULE_GET_API(AbortBlock);
REDISMODULE_GET_API(Milliseconds);
RedisModule_SetModuleAttribs(ctx,name,ver,apiver);