feat[osal]: Add mpp_singleton module

Signed-off-by: Chandler Chen <chandler.chen@rock-chips.com>
Signed-off-by: Hongjin Li <vic.hong@rock-chips.com>
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
Change-Id: Idfff4d03e1c98e4ad1ddf1553133ba4b0194f7b8

osal/CMakeLists.txt

@@ -27,6 +27,7 @@ set(MPP_DRIVER
 )
 
 add_library(osal OBJECT
+    mpp_singleton.c
     mpp_soc.cpp
     mpp_platform.cpp
     mpp_runtime.cpp

osal/inc/mpp_singleton.h

@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: Apache-2.0 OR MIT */
+/*
+ * Copyright (c) 2024 Rockchip Electronics Co., Ltd.
+ */
+
+#ifndef __MPP_SINGLETON_H__
+#define __MPP_SINGLETON_H__
+
+#include "rk_type.h"
+
+typedef enum MppSingletonId_e {
+    MPP_SGLN_BASE           = 0,
+    /* osal base module */
+    MPP_SGLN_OS_LOG         = MPP_SGLN_BASE,
+    MPP_SGLN_OS_MEM,
+    MPP_SGLN_OS_ALLOCATOR,
+    MPP_SGLN_MEM_POOL,
+    /* hardware platform */
+    MPP_SGLN_SOC,
+    MPP_SGLN_PLATFORM,
+    /* software platform */
+    MPP_SGLN_RUNTIME,
+    /* base module */
+    MPP_SGLN_BUFFER,
+    MPP_SGLN_META,
+    MPP_SGLN_FRAME,
+    MPP_SGLN_PACKET,
+    /* system module */
+    MPP_SGLN_KOBJ,
+    MPP_SGLN_ENC_CFG,
+    MPP_SGLN_DEC_CFG,
+    MPP_SGLN_DEC_RC_API,
+
+    /* max count for start init process */
+    MPP_SGLN_MAX_CNT,
+} MppSingletonId;
+
+typedef struct MppSingletonInfo_t {
+    MppSingletonId  id;
+    const char      *name;
+    void            (*init)(void);
+    void            (*deinit)(void);
+} MppSingletonInfo;
+
+#define MPP_SINGLETON(id, name, init, deinit) \
+    __attribute__((constructor)) \
+    static void __mpp_singleton_add(void) { \
+        MppSingletonInfo info = { \
+            id, \
+            name, \
+            init, \
+            deinit, \
+        }; \
+        mpp_singleton_add(&info); \
+    }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+rk_s32 mpp_singleton_add(MppSingletonInfo *info);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MPP_SINGLETON_H__ */

osal/mpp_singleton.c

@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: Apache-2.0 OR MIT */
+/*
+ * Copyright (c) 2024 Rockchip Electronics Co., Ltd.
+ */
+
+#define  MODULE_TAG "mpp_singleton"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpp_env.h"
+#include "mpp_singleton.h"
+
+#define sgln_dbg(fmt, ...) \
+    do { \
+        if (sgln_debug) \
+            printf(MODULE_TAG ": " fmt, ##__VA_ARGS__); \
+    } while (0)
+
+static MppSingletonInfo sgln_info[MPP_SGLN_MAX_CNT] = {0};
+static rk_u64 sgln_mask = 0;
+static rk_u32 sgln_debug = 0;
+
+rk_s32 mpp_singleton_add(MppSingletonInfo *info)
+{
+    mpp_env_get_u32("mpp_sgln_debug", &sgln_debug, 0);
+
+    if (!info) {
+        sgln_dbg("can not add NULL info\n");
+        return rk_nok;
+    }
+
+    if (info->id >= MPP_SGLN_MAX_CNT) {
+        sgln_dbg("id %d larger than max %d\n", info->id, MPP_SGLN_MAX_CNT);
+        return rk_nok;
+    }
+
+    if (sgln_mask & (1 << info->id)) {
+        sgln_dbg("info %d has been registered\n", info->id);
+        return rk_nok;
+    }
+
+    sgln_info[info->id] = *info;
+    sgln_mask |= (1 << info->id);
+
+    sgln_dbg("info %d %s registered\n", info->id, info->name);
+
+    return rk_ok;
+}
+
+static void mpp_singleton_deinit(void)
+{
+    rk_s32 i;
+
+    sgln_dbg("deinit enter\n");
+
+    /* NOTE: revert deinit order */
+    for (i = MPP_SGLN_MAX_CNT - 1; i >= 0; i--) {
+        if (sgln_mask & (1 << i)) {
+            MppSingletonInfo *info = &sgln_info[i];
+
+            if (info->deinit) {
+                sgln_dbg("info %d %s deinit start\n", info->id, info->name);
+                info->deinit();
+                sgln_dbg("info %d %s deinit finish\n", info->id, info->name);
+            }
+        }
+    }
+
+    sgln_dbg("deinit leave\n");
+}
+
+__attribute__((constructor(65535))) static void mpp_singleton_init(void)
+{
+    rk_s32 i;
+
+    sgln_dbg("init enter\n");
+
+    /* NOTE: call atexit first to avoid init crash but not deinit */
+    atexit(mpp_singleton_deinit);
+
+    for (i = 0; i < MPP_SGLN_MAX_CNT; i++) {
+        if (sgln_mask & (1 << i)) {
+            MppSingletonInfo *info = &sgln_info[i];
+
+            if (info->init) {
+                sgln_dbg("info %d %s init start\n", info->id, info->name);
+                info->init();
+                sgln_dbg("info %d %s init finish\n", info->id, info->name);
+            }
+        }
+    }
+
+    sgln_dbg("init leave\n");
+}