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expose used memory via redismodule api 

The exposed functions:
1. RedisModule_GetUsedMemoryPercentage - return the used memory
2. RedisModue_MallocSize - return for a given pointer, the amount of memory allocated for this pointer
This commit is contained in:
meir@redislabs.com 2019-08-28 18:08:07 +03:00
parent a15a5d7097
commit 089ee5979d
2 changed files with 26 additions and 0 deletions
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22
src/module.c
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@ -5891,6 +5891,26 @@ int RM_CommandFilterArgDelete(RedisModuleCommandFilterCtx *fctx, int pos)
return REDISMODULE_OK;
}
/*
* For a given pointer, return The amount of memory
* allocated for this pointer.
*/
size_t RM_MallocSize(void* ptr){
return zmalloc_size(ptr);
}
/*
* Return the a number between 0 to 1 indicating
* the amount of memory currently used.
* 0 - no memory limit
* 1 and above, memory limit reached.
*/
float RM_GetUsedMemoryPercentage(){
float level;
getMaxmemoryState(NULL, NULL, NULL, &level);
return level;
}
/* --------------------------------------------------------------------------
* Module fork API
* -------------------------------------------------------------------------- */
@ -6971,4 +6991,6 @@ void moduleRegisterCoreAPI(void) {
REGISTER_API(BlockClientOnKeys);
REGISTER_API(SignalKeyAsReady);
REGISTER_API(GetBlockedClientReadyKey);
REGISTER_API(GetUsedMemoryPercentage);
REGISTER_API(MallocSize);
}

4
src/redismodule.h
View File

@ -633,6 +633,8 @@ int REDISMODULE_API_FUNC(RedisModule_CommandFilterArgDelete)(RedisModuleCommandF
int REDISMODULE_API_FUNC(RedisModule_Fork)(RedisModuleForkDoneHandler cb, void *user_data);
int REDISMODULE_API_FUNC(RedisModule_ExitFromChild)(int retcode);
int REDISMODULE_API_FUNC(RedisModule_KillForkChild)(int child_pid);
float REDISMODULE_API_FUNC(RedisModule_GetUsedMemoryPercentage)();
size_t REDISMODULE_API_FUNC(RedisModule_MallocSize)(void* ptr);
#endif
#define RedisModule_IsAOFClient(id) ((id) == UINT64_MAX)
@ -842,6 +844,8 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
REDISMODULE_GET_API(Fork);
REDISMODULE_GET_API(ExitFromChild);
REDISMODULE_GET_API(KillForkChild);
REDISMODULE_GET_API(GetUsedMemoryPercentage);
REDISMODULE_GET_API(MallocSize);
#endif
if (RedisModule_IsModuleNameBusy && RedisModule_IsModuleNameBusy(name)) return REDISMODULE_ERR;