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-rw-r--r--tests/modules/mallocsize.c237
1 files changed, 237 insertions, 0 deletions
diff --git a/tests/modules/mallocsize.c b/tests/modules/mallocsize.c
new file mode 100644
index 0000000..a1d31c1
--- /dev/null
+++ b/tests/modules/mallocsize.c
@@ -0,0 +1,237 @@
+#include "redismodule.h"
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+
+#define UNUSED(V) ((void) V)
+
+/* Registered type */
+RedisModuleType *mallocsize_type = NULL;
+
+typedef enum {
+ UDT_RAW,
+ UDT_STRING,
+ UDT_DICT
+} udt_type_t;
+
+typedef struct {
+ void *ptr;
+ size_t len;
+} raw_t;
+
+typedef struct {
+ udt_type_t type;
+ union {
+ raw_t raw;
+ RedisModuleString *str;
+ RedisModuleDict *dict;
+ } data;
+} udt_t;
+
+void udt_free(void *value) {
+ udt_t *udt = value;
+ switch (udt->type) {
+ case (UDT_RAW): {
+ RedisModule_Free(udt->data.raw.ptr);
+ break;
+ }
+ case (UDT_STRING): {
+ RedisModule_FreeString(NULL, udt->data.str);
+ break;
+ }
+ case (UDT_DICT): {
+ RedisModuleString *dk, *dv;
+ RedisModuleDictIter *iter = RedisModule_DictIteratorStartC(udt->data.dict, "^", NULL, 0);
+ while((dk = RedisModule_DictNext(NULL, iter, (void **)&dv)) != NULL) {
+ RedisModule_FreeString(NULL, dk);
+ RedisModule_FreeString(NULL, dv);
+ }
+ RedisModule_DictIteratorStop(iter);
+ RedisModule_FreeDict(NULL, udt->data.dict);
+ break;
+ }
+ }
+ RedisModule_Free(udt);
+}
+
+void udt_rdb_save(RedisModuleIO *rdb, void *value) {
+ udt_t *udt = value;
+ RedisModule_SaveUnsigned(rdb, udt->type);
+ switch (udt->type) {
+ case (UDT_RAW): {
+ RedisModule_SaveStringBuffer(rdb, udt->data.raw.ptr, udt->data.raw.len);
+ break;
+ }
+ case (UDT_STRING): {
+ RedisModule_SaveString(rdb, udt->data.str);
+ break;
+ }
+ case (UDT_DICT): {
+ RedisModule_SaveUnsigned(rdb, RedisModule_DictSize(udt->data.dict));
+ RedisModuleString *dk, *dv;
+ RedisModuleDictIter *iter = RedisModule_DictIteratorStartC(udt->data.dict, "^", NULL, 0);
+ while((dk = RedisModule_DictNext(NULL, iter, (void **)&dv)) != NULL) {
+ RedisModule_SaveString(rdb, dk);
+ RedisModule_SaveString(rdb, dv);
+ RedisModule_FreeString(NULL, dk); /* Allocated by RedisModule_DictNext */
+ }
+ RedisModule_DictIteratorStop(iter);
+ break;
+ }
+ }
+}
+
+void *udt_rdb_load(RedisModuleIO *rdb, int encver) {
+ if (encver != 0)
+ return NULL;
+ udt_t *udt = RedisModule_Alloc(sizeof(*udt));
+ udt->type = RedisModule_LoadUnsigned(rdb);
+ switch (udt->type) {
+ case (UDT_RAW): {
+ udt->data.raw.ptr = RedisModule_LoadStringBuffer(rdb, &udt->data.raw.len);
+ break;
+ }
+ case (UDT_STRING): {
+ udt->data.str = RedisModule_LoadString(rdb);
+ break;
+ }
+ case (UDT_DICT): {
+ long long dict_len = RedisModule_LoadUnsigned(rdb);
+ udt->data.dict = RedisModule_CreateDict(NULL);
+ for (int i = 0; i < dict_len; i += 2) {
+ RedisModuleString *key = RedisModule_LoadString(rdb);
+ RedisModuleString *val = RedisModule_LoadString(rdb);
+ RedisModule_DictSet(udt->data.dict, key, val);
+ }
+ break;
+ }
+ }
+
+ return udt;
+}
+
+size_t udt_mem_usage(RedisModuleKeyOptCtx *ctx, const void *value, size_t sample_size) {
+ UNUSED(ctx);
+ UNUSED(sample_size);
+
+ const udt_t *udt = value;
+ size_t size = sizeof(*udt);
+
+ switch (udt->type) {
+ case (UDT_RAW): {
+ size += RedisModule_MallocSize(udt->data.raw.ptr);
+ break;
+ }
+ case (UDT_STRING): {
+ size += RedisModule_MallocSizeString(udt->data.str);
+ break;
+ }
+ case (UDT_DICT): {
+ void *dk;
+ size_t keylen;
+ RedisModuleString *dv;
+ RedisModuleDictIter *iter = RedisModule_DictIteratorStartC(udt->data.dict, "^", NULL, 0);
+ while((dk = RedisModule_DictNextC(iter, &keylen, (void **)&dv)) != NULL) {
+ size += keylen;
+ size += RedisModule_MallocSizeString(dv);
+ }
+ RedisModule_DictIteratorStop(iter);
+ break;
+ }
+ }
+
+ return size;
+}
+
+/* MALLOCSIZE.SETRAW key len */
+int cmd_setraw(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+ if (argc != 3)
+ return RedisModule_WrongArity(ctx);
+
+ RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_WRITE);
+
+ udt_t *udt = RedisModule_Alloc(sizeof(*udt));
+ udt->type = UDT_RAW;
+
+ long long raw_len;
+ RedisModule_StringToLongLong(argv[2], &raw_len);
+ udt->data.raw.ptr = RedisModule_Alloc(raw_len);
+ udt->data.raw.len = raw_len;
+
+ RedisModule_ModuleTypeSetValue(key, mallocsize_type, udt);
+ RedisModule_CloseKey(key);
+
+ return RedisModule_ReplyWithSimpleString(ctx, "OK");
+}
+
+/* MALLOCSIZE.SETSTR key string */
+int cmd_setstr(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+ if (argc != 3)
+ return RedisModule_WrongArity(ctx);
+
+ RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_WRITE);
+
+ udt_t *udt = RedisModule_Alloc(sizeof(*udt));
+ udt->type = UDT_STRING;
+
+ udt->data.str = argv[2];
+ RedisModule_RetainString(ctx, argv[2]);
+
+ RedisModule_ModuleTypeSetValue(key, mallocsize_type, udt);
+ RedisModule_CloseKey(key);
+
+ return RedisModule_ReplyWithSimpleString(ctx, "OK");
+}
+
+/* MALLOCSIZE.SETDICT key field value [field value ...] */
+int cmd_setdict(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+ if (argc < 4 || argc % 2)
+ return RedisModule_WrongArity(ctx);
+
+ RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_WRITE);
+
+ udt_t *udt = RedisModule_Alloc(sizeof(*udt));
+ udt->type = UDT_DICT;
+
+ udt->data.dict = RedisModule_CreateDict(ctx);
+ for (int i = 2; i < argc; i += 2) {
+ RedisModule_DictSet(udt->data.dict, argv[i], argv[i+1]);
+ /* No need to retain argv[i], it is copied as the rax key */
+ RedisModule_RetainString(ctx, argv[i+1]);
+ }
+
+ RedisModule_ModuleTypeSetValue(key, mallocsize_type, udt);
+ RedisModule_CloseKey(key);
+
+ return RedisModule_ReplyWithSimpleString(ctx, "OK");
+}
+
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+ UNUSED(argv);
+ UNUSED(argc);
+ if (RedisModule_Init(ctx,"mallocsize",1,REDISMODULE_APIVER_1)== REDISMODULE_ERR)
+ return REDISMODULE_ERR;
+
+ RedisModuleTypeMethods tm = {
+ .version = REDISMODULE_TYPE_METHOD_VERSION,
+ .rdb_load = udt_rdb_load,
+ .rdb_save = udt_rdb_save,
+ .free = udt_free,
+ .mem_usage2 = udt_mem_usage,
+ };
+
+ mallocsize_type = RedisModule_CreateDataType(ctx, "allocsize", 0, &tm);
+ if (mallocsize_type == NULL)
+ return REDISMODULE_ERR;
+
+ if (RedisModule_CreateCommand(ctx, "mallocsize.setraw", cmd_setraw, "", 1, 1, 1) == REDISMODULE_ERR)
+ return REDISMODULE_ERR;
+
+ if (RedisModule_CreateCommand(ctx, "mallocsize.setstr", cmd_setstr, "", 1, 1, 1) == REDISMODULE_ERR)
+ return REDISMODULE_ERR;
+
+ if (RedisModule_CreateCommand(ctx, "mallocsize.setdict", cmd_setdict, "", 1, 1, 1) == REDISMODULE_ERR)
+ return REDISMODULE_ERR;
+
+ return REDISMODULE_OK;
+}