1 /**************************************************************************
3 * Copyright 2010 VMware, Inc.
4 * Copyright 2011 Intel corporation
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 **************************************************************************/
29 #include <limits.h> // for CHAR_MAX
39 #include "os_string.hpp"
41 #include "trace_callset.hpp"
42 #include "trace_parser.hpp"
43 #include "trace_writer.hpp"
45 #define MAX(a, b) ((a) > (b) ? (a) : (b))
46 #define STRNCMP_LITERAL(var, literal) strncmp((var), (literal), sizeof (literal) -1)
48 static const char *synopsis = "Create a new trace by trimming an existing trace.";
54 << "usage: apitrace trim [OPTIONS] TRACE_FILE...\n"
57 " -h, --help Show detailed help for trim options and exit\n"
58 " --calls=CALLSET Include specified calls in the trimmed output.\n"
59 " --frames=FRAMESET Include specified frames in the trimmed output.\n"
60 " --deps Include additional calls to satisfy dependencies\n"
61 " --no-deps Do not include calls from dependency analysis\n"
62 " --prune Omit uninteresting calls from the trace output\n"
63 " --no-prune Do not prune uninteresting calls from the trace.\n"
64 " -x, --exact Trim exactly to calls specified in --calls/--frames\n"
65 " Equivalent to both --no-deps and --no-prune\n"
66 " --print-callset Print the final set of calls included in output\n"
67 " --thread=THREAD_ID Only retain calls from specified thread\n"
68 " -o, --output=TRACE_FILE Output trace file\n"
76 << "usage: apitrace trim [OPTIONS] TRACE_FILE...\n"
79 " -h, --help Show this help message and exit\n"
81 " --calls=CALLSET Include specified calls in the trimmed output.\n"
82 " --frames=FRAMESET Include specified frames in the trimmed output.\n"
83 " Note that due to dependency analysis and pruning\n"
84 " of uninteresting calls the resulting trace may\n"
85 " include more and less calls than specified.\n"
86 " See --no-deps, --no-prune, and --exact to change\n"
89 " --deps Perform dependency analysis and include dependent\n"
90 " calls as needed, (even if those calls were not\n"
91 " explicitly requested with --calls or --frames).\n"
92 " This is the default behavior. See --no-deps and\n"
93 " --exact to change the behavior.\n"
95 " --no-deps Do not perform dependency analysis. In this mode\n"
96 " the trimmed trace will never include calls from\n"
97 " outside what is specified in --calls or --frames.\n"
99 " --prune Omit calls with no side effects, even if the call\n"
100 " is within the range specified by --calls/--frames.\n"
101 " This is the default behavior. See --no-prune.\n"
103 " --no-prune Do not prune uninteresting calls from the trace.\n"
104 " In this mode the trimmed trace will never omit\n"
105 " any calls within the user-specified range.\n"
107 " -x, --exact Trim the trace to exactly the calls specified in\n"
108 " --calls and --frames. This option is equivalent\n"
109 " to passing both --no-deps and --no-prune.\n"
111 " --print-callset Print to stdout the final set of calls included\n"
112 " in the trim output. This can be useful for\n"
113 " debugging trim operations by using a modified\n"
114 " callset on the command-line along with --exact.\n"
115 " Use --calls=@<file> to read callset from a file.\n"
117 " --thread=THREAD_ID Only retain calls from specified thread\n"
119 " -o, --output=TRACE_FILE Output trace file\n"
125 CALLS_OPT = CHAR_MAX + 1,
136 shortOptions = "ho:x";
138 const static struct option
140 {"help", no_argument, 0, 'h'},
141 {"calls", required_argument, 0, CALLS_OPT},
142 {"frames", required_argument, 0, FRAMES_OPT},
143 {"deps", no_argument, 0, DEPS_OPT},
144 {"no-deps", no_argument, 0, NO_DEPS_OPT},
145 {"prune", no_argument, 0, PRUNE_OPT},
146 {"no-prune", no_argument, 0, NO_PRUNE_OPT},
147 {"exact", no_argument, 0, 'x'},
148 {"thread", required_argument, 0, THREAD_OPT},
149 {"output", required_argument, 0, 'o'},
150 {"print-callset", no_argument, 0, PRINT_CALLSET_OPT},
154 struct stringCompare {
155 bool operator() (const char *a, const char *b) const {
156 return strcmp(a, b) < 0;
160 class TraceAnalyzer {
161 /* Maps for tracking resource dependencies between calls. */
162 std::map<std::string, std::set<unsigned> > resources;
163 std::map<std::string, std::set<std::string> > dependencies;
165 /* Maps for tracking OpenGL state. */
166 std::map<GLenum, unsigned> texture_map;
168 /* The final set of calls required. This consists of calls added
169 * explicitly with the require() method as well as all calls
170 * implicitly required by those through resource dependencies. */
171 std::set<unsigned> required;
173 bool transformFeedbackActive;
174 bool framebufferObjectActive;
176 GLuint insideNewEndList;
177 GLuint activeProgram;
178 GLenum activeTextureUnit;
180 /* Rendering often has no side effects, but it can in some cases,
181 * (such as when transform feedback is active, or when rendering
182 * targets a framebuffer object). */
183 bool renderingHasSideEffect() {
184 return transformFeedbackActive || framebufferObjectActive;
187 /* Provide: Record that the given call affects the given resource
188 * as a side effect. */
189 void provide(std::string resource, trace::CallNo call_no) {
190 resources[resource].insert(call_no);
193 /* Like provide, but with a simply-formatted string, (appending an
194 * integer to the given string). */
195 void providef(std::string resource, int resource_no, trace::CallNo call_no) {
196 std::stringstream ss;
197 ss << resource << resource_no;
198 provide(ss.str(), call_no);
201 /* Link: Establish a dependency between resource 'resource' and
202 * resource 'dependency'. This dependency is captured by name so
203 * that if the list of calls that provide 'dependency' grows
204 * before 'resource' is consumed, those calls will still be
206 void link(std::string resource, std::string dependency) {
207 dependencies[resource].insert(dependency);
210 /* Like link, but with a simply-formatted string, (appending an
211 * integer to the given string). */
212 void linkf(std::string resource, std::string dependency, int dep_no) {
214 std::stringstream ss;
215 ss << dependency << dep_no;
216 link(resource, ss.str());
219 /* Unlink: Remove dependency from 'resource' on 'dependency'. */
220 void unlink(std::string resource, std::string dependency) {
221 dependencies[resource].erase(dependency);
222 if (dependencies[resource].size() == 0) {
223 dependencies.erase(resource);
227 /* Like unlink, but with a simply-formated string, (appending an
228 * integer to the given string). */
229 void unlinkf(std::string resource, std::string dependency, int dep_no) {
231 std::stringstream ss;
232 ss << dependency << dep_no;
233 unlink(resource, ss.str());
236 /* Unlink all: Remove dependencies from 'resource' to all other
238 void unlinkAll(std::string resource) {
239 dependencies.erase(resource);
242 /* Resolve: Recursively compute all calls providing 'resource',
243 * (including linked dependencies of 'resource' on other
245 std::set<unsigned> resolve(std::string resource) {
246 std::set<std::string> *deps;
247 std::set<std::string>::iterator dep;
249 std::set<unsigned> *calls;
250 std::set<unsigned>::iterator call;
252 std::set<unsigned> result, deps_set;
254 /* Recursively chase dependencies. */
255 if (dependencies.count(resource)) {
256 deps = &dependencies[resource];
257 for (dep = deps->begin(); dep != deps->end(); dep++) {
258 deps_set = resolve(*dep);
259 for (call = deps_set.begin(); call != deps_set.end(); call++) {
260 result.insert(*call);
265 /* Also look for calls that directly provide 'resource' */
266 if (resources.count(resource)) {
267 calls = &resources[resource];
268 for (call = calls->begin(); call != calls->end(); call++) {
269 result.insert(*call);
276 /* Consume: Resolve all calls that provide the given resource, and
277 * add them to the required list. Then clear the call list for
278 * 'resource' along with any dependencies. */
279 void consume(std::string resource) {
281 std::set<unsigned> calls;
282 std::set<unsigned>::iterator call;
284 calls = resolve(resource);
286 dependencies.erase(resource);
287 resources.erase(resource);
289 for (call = calls.begin(); call != calls.end(); call++) {
290 required.insert(*call);
294 void stateTrackPreCall(trace::Call *call) {
296 const char *name = call->name();
298 if (strcmp(name, "glBegin") == 0) {
299 insideBeginEnd = true;
303 if (strcmp(name, "glBeginTransformFeedback") == 0) {
304 transformFeedbackActive = true;
308 if (strcmp(name, "glActiveTexture") == 0) {
309 activeTextureUnit = static_cast<GLenum>(call->arg(0).toSInt());
313 if (strcmp(name, "glBindTexture") == 0) {
317 target = static_cast<GLenum>(call->arg(0).toSInt());
318 texture = call->arg(1).toUInt();
321 texture_map.erase(target);
323 texture_map[target] = texture;
329 if (strcmp(name, "glUseProgram") == 0) {
330 activeProgram = call->arg(0).toUInt();
333 if (strcmp(name, "glBindFramebuffer") == 0) {
337 target = static_cast<GLenum>(call->arg(0).toSInt());
338 framebuffer = call->arg(1).toUInt();
340 if (target == GL_FRAMEBUFFER || target == GL_DRAW_FRAMEBUFFER) {
341 if (framebuffer == 0) {
342 framebufferObjectActive = false;
344 framebufferObjectActive = true;
350 if (strcmp(name, "glNewList") == 0) {
351 GLuint list = call->arg(0).toUInt();
353 insideNewEndList = list;
357 void stateTrackPostCall(trace::Call *call) {
359 const char *name = call->name();
361 if (strcmp(name, "glEnd") == 0) {
362 insideBeginEnd = false;
366 if (strcmp(name, "glEndTransformFeedback") == 0) {
367 transformFeedbackActive = false;
371 /* If this swapbuffers was included in the trace then it will
372 * have already consumed all framebuffer dependencies. If not,
373 * then clear them now so that they don't carry over into the
375 if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
376 call->flags & trace::CALL_FLAG_END_FRAME) {
377 dependencies.erase("framebuffer");
378 resources.erase("framebuffer");
382 if (strcmp(name, "glEndList") == 0) {
383 insideNewEndList = 0;
387 void recordSideEffects(trace::Call *call) {
389 const char *name = call->name();
391 /* Handle display lists before any other processing. */
393 /* FIXME: If we encode the list of commands that are executed
394 * immediately (as opposed to those that are compiled into a
395 * display list) then we could generate a "display-list-X"
396 * resource just as we do for "texture-X" resources and only
397 * emit it in the trace if a glCallList(X) is emitted. For
398 * now, simply punt and include anything within glNewList and
399 * glEndList in the trim output. This guarantees that display
400 * lists will work, but does not trim out unused display
402 if (insideNewEndList != 0) {
403 provide("state", call->no);
407 /* If call is flagged as no side effects, then we are done here. */
408 if (call->flags & trace::CALL_FLAG_NO_SIDE_EFFECTS) {
412 /* Similarly, swap-buffers calls don't have interesting side effects. */
413 if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
414 call->flags & trace::CALL_FLAG_END_FRAME) {
418 if (strcmp(name, "glGenTextures") == 0) {
419 const trace::Array *textures = dynamic_cast<const trace::Array *>(&call->arg(1));
424 for (i = 0; i < textures->size(); i++) {
425 texture = textures->values[i]->toUInt();
426 providef("texture-", texture, call->no);
432 if (strcmp(name, "glBindTexture") == 0) {
436 std::stringstream ss_target, ss_texture;
438 target = static_cast<GLenum>(call->arg(0).toSInt());
439 texture = call->arg(1).toUInt();
441 ss_target << "texture-unit-" << activeTextureUnit << "-target-" << target;
442 ss_texture << "texture-" << texture;
444 resources.erase(ss_target.str());
445 provide(ss_target.str(), call->no);
447 unlinkAll(ss_target.str());
448 link(ss_target.str(), ss_texture.str());
453 /* FIXME: Need to handle glMultTexImage and friends. */
454 if (STRNCMP_LITERAL(name, "glTexImage") == 0 ||
455 STRNCMP_LITERAL(name, "glTexSubImage") == 0 ||
456 STRNCMP_LITERAL(name, "glCopyTexImage") == 0 ||
457 STRNCMP_LITERAL(name, "glCopyTexSubImage") == 0 ||
458 STRNCMP_LITERAL(name, "glCompressedTexImage") == 0 ||
459 STRNCMP_LITERAL(name, "glCompressedTexSubImage") == 0 ||
460 strcmp(name, "glInvalidateTexImage") == 0 ||
461 strcmp(name, "glInvalidateTexSubImage") == 0) {
463 std::set<unsigned> *calls;
464 std::set<unsigned>::iterator c;
465 std::stringstream ss_target, ss_texture;
467 GLenum target = static_cast<GLenum>(call->arg(0).toSInt());
469 ss_target << "texture-unit-" << activeTextureUnit << "-target-" << target;
470 ss_texture << "texture-" << texture_map[target];
472 /* The texture resource depends on this call and any calls
473 * providing the given texture target. */
474 provide(ss_texture.str(), call->no);
476 if (resources.count(ss_target.str())) {
477 calls = &resources[ss_target.str()];
478 for (c = calls->begin(); c != calls->end(); c++) {
479 provide(ss_texture.str(), *c);
486 if (strcmp(name, "glEnable") == 0) {
489 cap = static_cast<GLenum>(call->arg(0).toSInt());
491 if (cap == GL_TEXTURE_1D ||
492 cap == GL_TEXTURE_2D ||
493 cap == GL_TEXTURE_3D ||
494 cap == GL_TEXTURE_CUBE_MAP)
496 std::stringstream ss;
498 ss << "texture-unit-" << activeTextureUnit << "-target-" << cap;
500 link("render-state", ss.str());
503 provide("state", call->no);
507 if (strcmp(name, "glDisable") == 0) {
510 cap = static_cast<GLenum>(call->arg(0).toSInt());
512 if (cap == GL_TEXTURE_1D ||
513 cap == GL_TEXTURE_2D ||
514 cap == GL_TEXTURE_3D ||
515 cap == GL_TEXTURE_CUBE_MAP)
517 std::stringstream ss;
519 ss << "texture-unit-" << activeTextureUnit << "-target-" << cap;
521 unlink("render-state", ss.str());
524 provide("state", call->no);
528 if (strcmp(name, "glCreateShader") == 0 ||
529 strcmp(name, "glCreateShaderObjectARB") == 0) {
531 GLuint shader = call->ret->toUInt();
532 providef("shader-", shader, call->no);
536 if (strcmp(name, "glShaderSource") == 0 ||
537 strcmp(name, "glShaderSourceARB") == 0 ||
538 strcmp(name, "glCompileShader") == 0 ||
539 strcmp(name, "glCompileShaderARB") == 0 ||
540 strcmp(name, "glGetShaderiv") == 0 ||
541 strcmp(name, "glGetShaderInfoLog") == 0) {
543 GLuint shader = call->arg(0).toUInt();
544 providef("shader-", shader, call->no);
548 if (strcmp(name, "glCreateProgram") == 0 ||
549 strcmp(name, "glCreateProgramObjectARB") == 0) {
551 GLuint program = call->ret->toUInt();
552 providef("program-", program, call->no);
556 if (strcmp(name, "glAttachShader") == 0 ||
557 strcmp(name, "glAttachObjectARB") == 0) {
559 GLuint program, shader;
560 std::stringstream ss_program, ss_shader;
562 program = call->arg(0).toUInt();
563 shader = call->arg(1).toUInt();
565 ss_program << "program-" << program;
566 ss_shader << "shader-" << shader;
568 link(ss_program.str(), ss_shader.str());
569 provide(ss_program.str(), call->no);
574 if (strcmp(name, "glDetachShader") == 0 ||
575 strcmp(name, "glDetachObjectARB") == 0) {
577 GLuint program, shader;
578 std::stringstream ss_program, ss_shader;
580 program = call->arg(0).toUInt();
581 shader = call->arg(1).toUInt();
583 ss_program << "program-" << program;
584 ss_shader << "shader-" << shader;
586 unlink(ss_program.str(), ss_shader.str());
591 if (strcmp(name, "glUseProgram") == 0 ||
592 strcmp(name, "glUseProgramObjectARB") == 0) {
596 program = call->arg(0).toUInt();
598 unlinkAll("render-program-state");
601 unlink("render-state", "render-program-state");
602 provide("state", call->no);
604 std::stringstream ss;
606 ss << "program-" << program;
608 link("render-state", "render-program-state");
609 link("render-program-state", ss.str());
611 provide(ss.str(), call->no);
617 if (strcmp(name, "glGetUniformLocation") == 0 ||
618 strcmp(name, "glGetUniformLocationARB") == 0 ||
619 strcmp(name, "glGetFragDataLocation") == 0 ||
620 strcmp(name, "glGetFragDataLocationEXT") == 0 ||
621 strcmp(name, "glGetSubroutineUniformLocation") == 0 ||
622 strcmp(name, "glGetProgramResourceLocation") == 0 ||
623 strcmp(name, "glGetProgramResourceLocationIndex") == 0 ||
624 strcmp(name, "glGetVaryingLocationNV") == 0) {
626 GLuint program = call->arg(0).toUInt();
628 providef("program-", program, call->no);
633 /* For any call that accepts 'location' as its first argument,
634 * perform a lookup in our location->program map and add a
635 * dependence on the program we find there. */
636 if (call->sig->num_args > 0 &&
637 strcmp(call->sig->arg_names[0], "location") == 0) {
639 providef("program-", activeProgram, call->no);
641 /* We can't easily tell if this uniform is being used to
642 * associate a sampler in the shader with a texture
643 * unit. The conservative option is to assume that it is
644 * and create a link from the active program to any bound
645 * textures for the given unit number.
647 * FIXME: We should be doing the same thing for calls to
649 if (strcmp(name, "glUniform1i") == 0 ||
650 strcmp(name, "glUniform1iARB") == 0) {
652 GLint max_unit = MAX(GL_MAX_TEXTURE_COORDS, GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS);
654 GLint unit = call->arg(1).toSInt();
655 std::stringstream ss_program;
656 std::stringstream ss_texture;
658 if (unit < max_unit) {
660 ss_program << "program-" << activeProgram;
662 ss_texture << "texture-unit-" << GL_TEXTURE0 + unit << "-target-";
664 /* We don't know what target(s) might get bound to
665 * this texture unit, so conservatively link to
666 * all. Only bound textures will actually get inserted
667 * into the output call stream. */
668 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_1D);
669 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_2D);
670 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_3D);
671 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_CUBE_MAP);
678 /* FIXME: We cut a huge swath by assuming that any unhandled
679 * call that has a first argument named "program" should not
680 * be included in the trimmed output unless the program of
681 * that number is also included.
683 * This heuristic is correct for many cases, but we should
684 * actually carefully verify if this includes some calls
685 * inappropriately, or if it misses some.
687 if (strcmp(name, "glLinkProgram") == 0 ||
688 strcmp(name, "glLinkProgramARB") == 0 ||
689 (call->sig->num_args > 0 &&
690 (strcmp(call->sig->arg_names[0], "program") == 0 ||
691 strcmp(call->sig->arg_names[0], "programObj") == 0))) {
693 GLuint program = call->arg(0).toUInt();
694 providef("program-", program, call->no);
698 /* Handle all rendering operations, (even though only glEnd is
699 * flagged as a rendering operation we treat everything from
700 * glBegin through glEnd as a rendering operation). */
701 if (call->flags & trace::CALL_FLAG_RENDER ||
704 std::set<unsigned> calls;
705 std::set<unsigned>::iterator c;
707 provide("framebuffer", call->no);
709 calls = resolve("render-state");
711 for (c = calls.begin(); c != calls.end(); c++) {
712 provide("framebuffer", *c);
715 /* In some cases, rendering has side effects beyond the
716 * framebuffer update. */
717 if (renderingHasSideEffect()) {
718 provide("state", call->no);
719 for (c = calls.begin(); c != calls.end(); c++) {
720 provide("state", *c);
727 /* By default, assume this call affects the state somehow. */
728 resources["state"].insert(call->no);
731 void requireDependencies(trace::Call *call) {
733 /* Swap-buffers calls depend on framebuffer state. */
734 if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
735 call->flags & trace::CALL_FLAG_END_FRAME) {
736 consume("framebuffer");
739 /* By default, just assume this call depends on generic state. */
745 TraceAnalyzer(): transformFeedbackActive(false),
746 framebufferObjectActive(false),
747 insideBeginEnd(false),
749 activeTextureUnit(GL_TEXTURE0)
754 /* Analyze this call by tracking state and recording all the
755 * resources provided by this call as side effects.. */
756 void analyze(trace::Call *call) {
758 stateTrackPreCall(call);
760 recordSideEffects(call);
762 stateTrackPostCall(call);
765 /* Require this call and all of its dependencies to be included in
766 * the final trace. */
767 void require(trace::Call *call) {
769 /* First, find and insert all calls that this call depends on. */
770 requireDependencies(call);
772 /* Then insert this call itself. */
773 required.insert(call->no);
776 /* Return a set of all the required calls, (both those calls added
777 * explicitly with require() and those implicitly depended
779 std::set<unsigned> *get_required(void) {
784 struct trim_options {
785 /* Calls to be included in trace. */
786 trace::CallSet calls;
788 /* Frames to be included in trace. */
789 trace::CallSet frames;
791 /* Whether dependency analysis should be performed. */
792 bool dependency_analysis;
794 /* Whether uninteresting calls should be pruned.. */
795 bool prune_uninteresting;
797 /* Output filename */
800 /* Emit only calls from this thread (-1 == all threads) */
803 /* Print resulting callset */
808 trim_trace(const char *filename, struct trim_options *options)
810 trace::ParseBookmark beginning;
812 TraceAnalyzer analyzer;
813 std::set<unsigned> *required;
815 int call_range_first, call_range_last;
817 if (!p.open(filename)) {
818 std::cerr << "error: failed to open " << filename << "\n";
822 /* Mark the beginning so we can return here for pass 2. */
823 p.getBookmark(beginning);
825 /* In pass 1, analyze which calls are needed. */
828 while ((call = p.parse_call())) {
830 /* There's no use doing any work past the last call or frame
831 * requested by the user. */
832 if (call->no > options->calls.getLast() ||
833 frame > options->frames.getLast()) {
839 /* If requested, ignore all calls not belonging to the specified thread. */
840 if (options->thread != -1 && call->thread_id != options->thread) {
844 /* Also, prune if uninteresting (unless the user asked for no pruning. */
845 if (options->prune_uninteresting && call->flags & trace::CALL_FLAG_UNINTERESTING) {
849 /* If this call is included in the user-specified call set,
850 * then require it (and all dependencies) in the trimmed
852 if (options->calls.contains(*call) ||
853 options->frames.contains(frame, call->flags)) {
855 analyzer.require(call);
858 /* Regardless of whether we include this call or not, we do
859 * some dependency tracking (unless disabled by the user). We
860 * do this even for calls we have included in the output so
861 * that any state updates get performed. */
862 if (options->dependency_analysis) {
863 analyzer.analyze(call);
867 if (call->flags & trace::CALL_FLAG_END_FRAME)
873 /* Prepare output file and writer for output. */
874 if (options->output.empty()) {
875 os::String base(filename);
876 base.trimExtension();
878 options->output = std::string(base.str()) + std::string("-trim.trace");
881 trace::Writer writer;
882 if (!writer.open(options->output.c_str())) {
883 std::cerr << "error: failed to create " << filename << "\n";
887 /* Reset bookmark for pass 2. */
888 p.setBookmark(beginning);
890 /* In pass 2, emit the calls that are required. */
891 required = analyzer.get_required();
894 call_range_first = -1;
895 call_range_last = -1;
896 while ((call = p.parse_call())) {
898 /* There's no use doing any work past the last call or frame
899 * requested by the user. */
900 if (call->no > options->calls.getLast() ||
901 frame > options->frames.getLast()) {
906 if (required->find(call->no) != required->end()) {
907 writer.writeCall(call);
909 if (options->print_callset) {
910 if (call_range_first < 0) {
911 call_range_first = call->no;
912 printf ("%d", call_range_first);
913 } else if (call->no != call_range_last + 1) {
914 if (call_range_last != call_range_first)
915 printf ("-%d", call_range_last);
916 call_range_first = call->no;
917 printf (",%d", call_range_first);
919 call_range_last = call->no;
923 if (call->flags & trace::CALL_FLAG_END_FRAME) {
930 if (options->print_callset) {
931 if (call_range_last != call_range_first)
932 printf ("-%d\n", call_range_last);
935 std::cout << "Trimmed trace is available as " << options->output << "\n";
941 command(int argc, char *argv[])
943 struct trim_options options;
945 options.calls = trace::CallSet(trace::FREQUENCY_NONE);
946 options.frames = trace::CallSet(trace::FREQUENCY_NONE);
947 options.dependency_analysis = true;
948 options.prune_uninteresting = true;
951 options.print_callset = 0;
954 while ((opt = getopt_long(argc, argv, shortOptions, longOptions, NULL)) != -1) {
960 options.calls = trace::CallSet(optarg);
963 options.frames = trace::CallSet(optarg);
966 options.dependency_analysis = true;
969 options.dependency_analysis = false;
972 options.prune_uninteresting = true;
975 options.prune_uninteresting = false;
978 options.dependency_analysis = false;
979 options.prune_uninteresting = false;
982 options.thread = atoi(optarg);
985 options.output = optarg;
987 case PRINT_CALLSET_OPT:
988 options.print_callset = 1;
991 std::cerr << "error: unexpected option `" << opt << "`\n";
997 /* If neither of --calls nor --frames was set, default to the
998 * entire set of calls. */
999 if (options.calls.empty() && options.frames.empty()) {
1000 options.calls = trace::CallSet(trace::FREQUENCY_ALL);
1003 if (optind >= argc) {
1004 std::cerr << "error: apitrace trim requires a trace file as an argument.\n";
1009 if (argc > optind + 1) {
1010 std::cerr << "error: extraneous arguments:";
1011 for (int i = optind + 1; i < argc; i++) {
1012 std::cerr << " " << argv[i];
1019 return trim_trace(argv[optind], &options);
1022 const Command trim_command = {