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/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* Copyright 2011 Intel corporation
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#include <sstream>
#include <string.h>
#include <limits.h> // for CHAR_MAX
#include <getopt.h>
#include "cli.hpp"
#include "os_string.hpp"
#include "trace_callset.hpp"
#include "trace_parser.hpp"
#include "trace_writer.hpp"
static const char *synopsis = "Create a new trace by trimming an existing trace.";
static void
usage(void)
{
std::cout
<< "usage: apitrace trim [OPTIONS] TRACE_FILE...\n"
<< synopsis << "\n"
"\n"
" -h, --help Show detailed help for trim options and exit\n"
" --calls=CALLSET Include specified calls in the trimmed output.\n"
" --frames=FRAMESET Include specified frames in the trimmed output.\n"
" --thread=THREAD_ID Only retain calls from specified thread\n"
" -o, --output=TRACE_FILE Output trace file\n"
;
}
enum {
CALLS_OPT = CHAR_MAX + 1,
FRAMES_OPT,
THREAD_OPT
};
const static char *
shortOptions = "aho:x";
const static struct option
longOptions[] = {
{"help", no_argument, 0, 'h'},
{"calls", required_argument, 0, CALLS_OPT},
{"frames", required_argument, 0, FRAMES_OPT},
{"thread", required_argument, 0, THREAD_OPT},
{"output", required_argument, 0, 'o'},
{0, 0, 0, 0}
};
struct stringCompare {
bool operator() (const char *a, const char *b) const {
return strcmp(a, b) < 0;
}
};
struct trim_options {
/* Calls to be included in trace. */
trace::CallSet calls;
/* Frames to be included in trace. */
trace::CallSet frames;
/* Output filename */
std::string output;
/* Emit only calls from this thread (-1 == all threads) */
int thread;
};
static int
trim_trace(const char *filename, struct trim_options *options)
{
trace::Parser p;
unsigned frame;
if (!p.open(filename)) {
std::cerr << "error: failed to open " << filename << "\n";
return 1;
}
/* Prepare output file and writer for output. */
if (options->output.empty()) {
os::String base(filename);
base.trimExtension();
options->output = std::string(base.str()) + std::string("-trim.trace");
}
trace::Writer writer;
if (!writer.open(options->output.c_str())) {
std::cerr << "error: failed to create " << options->output << "\n";
return 1;
}
frame = 0;
trace::Call *call;
while ((call = p.parse_call())) {
/* There's no use doing any work past the last call and frame
* requested by the user. */
if ((options->calls.empty() || call->no > options->calls.getLast()) &&
(options->frames.empty() || frame > options->frames.getLast())) {
delete call;
break;
}
/* If requested, ignore all calls not belonging to the specified thread. */
if (options->thread != -1 && call->thread_id != options->thread) {
goto NEXT;
}
/* If this call is included in the user-specified call set,
* then require it (and all dependencies) in the trimmed
* output. */
if (options->calls.contains(*call) ||
options->frames.contains(frame, call->flags)) {
writer.writeCall(call);
}
NEXT:
if (call->flags & trace::CALL_FLAG_END_FRAME) {
frame++;
}
delete call;
}
std::cerr << "Trimmed trace is available as " << options->output << "\n";
return 0;
}
static int
command(int argc, char *argv[])
{
struct trim_options options;
options.calls = trace::CallSet(trace::FREQUENCY_NONE);
options.frames = trace::CallSet(trace::FREQUENCY_NONE);
options.output = "";
options.thread = -1;
int opt;
while ((opt = getopt_long(argc, argv, shortOptions, longOptions, NULL)) != -1) {
switch (opt) {
case 'h':
usage();
return 0;
case CALLS_OPT:
options.calls.merge(optarg);
break;
case FRAMES_OPT:
options.frames.merge(optarg);
break;
case THREAD_OPT:
options.thread = atoi(optarg);
break;
case 'o':
options.output = optarg;
break;
default:
std::cerr << "error: unexpected option `" << (char)opt << "`\n";
usage();
return 1;
}
}
/* If neither of --calls nor --frames was set, default to the
* entire set of calls. */
if (options.calls.empty() && options.frames.empty()) {
options.calls = trace::CallSet(trace::FREQUENCY_ALL);
}
if (optind >= argc) {
std::cerr << "error: apitrace trim requires a trace file as an argument.\n";
usage();
return 1;
}
if (argc > optind + 1) {
std::cerr << "error: extraneous arguments:";
for (int i = optind + 1; i < argc; i++) {
std::cerr << " " << argv[i];
}
std::cerr << "\n";
usage();
return 1;
}
return trim_trace(argv[optind], &options);
}
const Command trim_command = {
"trim",
synopsis,
usage,
command
};
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