86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
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* Copyright (C) 2017 Intel Corporation
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _IA_TRACE_H
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#define _IA_TRACE_H
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#include <inttypes.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "LogHelper.h"
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NAMESPACE_DECLARATION {
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#define IA_TRACE_MESSAGE_LENGTH 256
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#define IA_TRACE_TAG_ALWAYS (1 << 0)
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#define IA_TRACE_TAG_NOT_READY (1LL << 63)
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#define IA_TRACE_TAG IA_TRACE_TAG_ALWAYS
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#define IA_TRACE_DECLSPEC static inline
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void ia_trace_setup(void);
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extern volatile int32_t ia_trace_is_ready;
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extern uint64_t ia_trace_enabled_tags;
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extern int ia_trace_marker_fd;
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IA_TRACE_DECLSPEC __attribute__((always_inline)) int32_t
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ia_trace_atomic_acquire_load(volatile const int32_t *ptr)
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{
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int32_t value = *ptr;
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__asm__ __volatile__ ("" : : : "memory");
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return value;
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}
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IA_TRACE_DECLSPEC void ia_trace_init(void)
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{
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if (!ia_trace_atomic_acquire_load(&ia_trace_is_ready)) {
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ia_trace_setup();
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}
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}
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IA_TRACE_DECLSPEC uint64_t ia_trace_is_tag_enabled(uint64_t tag)
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{
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ia_trace_init();
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return ia_trace_enabled_tags & tag;
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}
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IA_TRACE_DECLSPEC void ia_trace_begin(uint64_t tag, const char *name)
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{
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if (ia_trace_is_tag_enabled(tag)) {
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char buf[IA_TRACE_MESSAGE_LENGTH];
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ssize_t len;
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len = snprintf(buf, IA_TRACE_MESSAGE_LENGTH, "B|%d|%s", getpid(), name);
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if (write(ia_trace_marker_fd, buf, len) != len)
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LOGE("write error!");
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}
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}
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IA_TRACE_DECLSPEC void ia_trace_end(uint64_t tag)
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{
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if (ia_trace_is_tag_enabled(tag)) {
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char c = 'E';
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if (write(ia_trace_marker_fd, &c, 1) !=1)
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LOGE("write error!");
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}
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}
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} NAMESPACE_DECLARATION_END
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#endif //_IA_TRACE_H
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