137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
/*
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* Copyright (C) 2015-2018 Alibaba Group Holding Limited
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*/
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#include "iotx_dm_internal.h"
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dm_ipc_t g_dm_ipc;
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static dm_ipc_t *_dm_ipc_get_ctx(void)
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{
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return &g_dm_ipc;
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}
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static void _dm_ipc_lock(void)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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if (ctx->mutex) {
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HAL_MutexLock(ctx->mutex);
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}
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}
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static void _dm_ipc_unlock(void)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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if (ctx->mutex) {
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HAL_MutexUnlock(ctx->mutex);
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}
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}
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int dm_ipc_init(int max_size)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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memset(ctx, 0, sizeof(dm_ipc_t));
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/* Create Mutex */
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ctx->mutex = HAL_MutexCreate();
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if (ctx->mutex == NULL) {
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return DM_INVALID_PARAMETER;
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}
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/* Init List */
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ctx->msg_list.max_size = max_size;
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INIT_LIST_HEAD(&ctx->msg_list.message_list);
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return SUCCESS_RETURN;
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}
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void dm_ipc_deinit(void)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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dm_ipc_msg_node_t *del_node = NULL;
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dm_ipc_msg_node_t *next_node = NULL;
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dm_ipc_msg_t *del_msg = NULL;
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if (ctx->mutex) {
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HAL_MutexDestroy(ctx->mutex);
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}
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list_for_each_entry_safe(del_node, next_node, &ctx->msg_list.message_list, linked_list, dm_ipc_msg_node_t) {
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/* Free Message */
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del_msg = (dm_ipc_msg_t *)del_node->data;
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if (del_msg->data) {
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DM_free(del_msg->data);
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}
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DM_free(del_msg);
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del_msg = NULL;
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/* Free Node */
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list_del(&del_node->linked_list);
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DM_free(del_node);
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}
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}
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int dm_ipc_msg_insert(void *data)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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dm_ipc_msg_node_t *node = NULL;
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if (data == NULL) {
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return DM_INVALID_PARAMETER;
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}
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_dm_ipc_lock();
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dm_log_debug("dm msg list size: %d, max size: %d", ctx->msg_list.size, ctx->msg_list.max_size);
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if (ctx->msg_list.size >= ctx->msg_list.max_size) {
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dm_log_warning("dm ipc list full");
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_dm_ipc_unlock();
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return FAIL_RETURN;
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}
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node = DM_malloc(sizeof(dm_ipc_msg_node_t));
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if (node == NULL) {
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_dm_ipc_unlock();
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return DM_MEMORY_NOT_ENOUGH;
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}
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memset(node, 0, sizeof(dm_ipc_msg_node_t));
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node->data = data;
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INIT_LIST_HEAD(&node->linked_list);
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ctx->msg_list.size++;
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list_add_tail(&node->linked_list, &ctx->msg_list.message_list);
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_dm_ipc_unlock();
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return SUCCESS_RETURN;
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}
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int dm_ipc_msg_next(void **data)
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{
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dm_ipc_t *ctx = _dm_ipc_get_ctx();
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dm_ipc_msg_node_t *node = NULL;
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if (data == NULL || *data != NULL) {
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return DM_INVALID_PARAMETER;
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}
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_dm_ipc_lock();
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if (list_empty(&ctx->msg_list.message_list)) {
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_dm_ipc_unlock();
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return FAIL_RETURN;
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}
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node = list_first_entry(&ctx->msg_list.message_list, dm_ipc_msg_node_t, linked_list);
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list_del(&node->linked_list);
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ctx->msg_list.size--;
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*data = node->data;
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DM_free(node);
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_dm_ipc_unlock();
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return SUCCESS_RETURN;
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}
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