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Current Path: /usr/src/contrib/processor-trace/libipt/src

usr / src / contrib / processor-trace / libipt / src /

📁 ..
📁 posix
📄 pt_asid.c(2.93 KB)
📄 pt_block_cache.c(2.94 KB)
📄 pt_block_decoder.c(88.11 KB)
📄 pt_config.c(5.87 KB)
📄 pt_cpu.c(3.89 KB)
📄 pt_decoder_function.c(9.07 KB)
📄 pt_encoder.c(19.19 KB)
📄 pt_error.c(3.09 KB)
📄 pt_event_queue.c(4.18 KB)
📄 pt_ild.c(30.45 KB)
📄 pt_image.c(15.28 KB)
📄 pt_image_section_cache.c(24.12 KB)
📄 pt_insn.c(8.6 KB)
📄 pt_insn_decoder.c(39.42 KB)
📄 pt_last_ip.c(3.28 KB)
📄 pt_msec_cache.c(3.38 KB)
📄 pt_packet.c(12.43 KB)
📄 pt_packet_decoder.c(14.01 KB)
📄 pt_query_decoder.c(80.68 KB)
📄 pt_retstack.c(2.56 KB)
📄 pt_section.c(12.77 KB)
📄 pt_section_file.c(5.53 KB)
📄 pt_sync.c(6.26 KB)
📄 pt_time.c(17.95 KB)
📄 pt_tnt_cache.c(2.47 KB)
📄 pt_version.c(1.8 KB)
📁 windows

Editing: pt_block_cache.c

/*
 * Copyright (c) 2016-2019, Intel Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  * Neither the name of Intel Corporation nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "pt_block_cache.h"

#include <stdlib.h>
#include <string.h>

struct pt_block_cache *pt_bcache_alloc(uint64_t nentries)
{
	struct pt_block_cache *bcache;
	uint64_t size;

if (!nentries || (UINT32_MAX < nentries))
		return NULL;

size = sizeof(*bcache) + (nentries * sizeof(struct pt_bcache_entry));
	if (SIZE_MAX < size)
		return NULL;

bcache = malloc((size_t) size);
	if (!bcache)
		return NULL;

memset(bcache, 0, (size_t) size);
	bcache->nentries = (uint32_t) nentries;

return bcache;
}

void pt_bcache_free(struct pt_block_cache *bcache)
{
	free(bcache);
}

int pt_bcache_add(struct pt_block_cache *bcache, uint64_t index,
		  struct pt_bcache_entry bce)
{
	if (!bcache)
		return -pte_internal;

if (bcache->nentries <= index)
		return -pte_internal;

/* We rely on guaranteed atomic operations as specified in section 8.1.1
	 * in Volume 3A of the Intel(R) Software Developer's Manual at
	 * http://www.intel.com/sdm.
	 */
	bcache->entry[(uint32_t) index] = bce;

return 0;
}

int pt_bcache_lookup(struct pt_bcache_entry *bce,
		     const struct pt_block_cache *bcache, uint64_t index)
{
	if (!bce || !bcache)
		return -pte_internal;

if (bcache->nentries <= index)
		return -pte_internal;

/* We rely on guaranteed atomic operations as specified in section 8.1.1
	 * in Volume 3A of the Intel(R) Software Developer's Manual at
	 * http://www.intel.com/sdm.
	 */
	*bce = bcache->entry[(uint32_t) index];

return 0;
}

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Editing: pt_block_cache.c

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