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);
405 /* Also, any texture bound inside a display list is
406 * conservatively considered required. */
407 if (strcmp(name, "glBindTexture") == 0) {
408 GLuint texture = call->arg(1).toUInt();
410 linkf("state", "texture-", texture);
416 /* If call is flagged as no side effects, then we are done here. */
417 if (call->flags & trace::CALL_FLAG_NO_SIDE_EFFECTS) {
421 /* Similarly, swap-buffers calls don't have interesting side effects. */
422 if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
423 call->flags & trace::CALL_FLAG_END_FRAME) {
427 if (strcmp(name, "glGenTextures") == 0) {
428 const trace::Array *textures = dynamic_cast<const trace::Array *>(&call->arg(1));
433 for (i = 0; i < textures->size(); i++) {
434 texture = textures->values[i]->toUInt();
435 providef("texture-", texture, call->no);
441 if (strcmp(name, "glBindTexture") == 0) {
445 std::stringstream ss_target, ss_texture;
447 target = static_cast<GLenum>(call->arg(0).toSInt());
448 texture = call->arg(1).toUInt();
450 ss_target << "texture-unit-" << activeTextureUnit << "-target-" << target;
451 ss_texture << "texture-" << texture;
453 resources.erase(ss_target.str());
454 provide(ss_target.str(), call->no);
456 unlinkAll(ss_target.str());
457 link(ss_target.str(), ss_texture.str());
462 /* FIXME: Need to handle glMultTexImage and friends. */
463 if (STRNCMP_LITERAL(name, "glTexImage") == 0 ||
464 STRNCMP_LITERAL(name, "glTexSubImage") == 0 ||
465 STRNCMP_LITERAL(name, "glCopyTexImage") == 0 ||
466 STRNCMP_LITERAL(name, "glCopyTexSubImage") == 0 ||
467 STRNCMP_LITERAL(name, "glCompressedTexImage") == 0 ||
468 STRNCMP_LITERAL(name, "glCompressedTexSubImage") == 0 ||
469 strcmp(name, "glInvalidateTexImage") == 0 ||
470 strcmp(name, "glInvalidateTexSubImage") == 0) {
472 std::set<unsigned> *calls;
473 std::set<unsigned>::iterator c;
474 std::stringstream ss_target, ss_texture;
476 GLenum target = static_cast<GLenum>(call->arg(0).toSInt());
478 ss_target << "texture-unit-" << activeTextureUnit << "-target-" << target;
479 ss_texture << "texture-" << texture_map[target];
481 /* The texture resource depends on this call and any calls
482 * providing the given texture target. */
483 provide(ss_texture.str(), call->no);
485 if (resources.count(ss_target.str())) {
486 calls = &resources[ss_target.str()];
487 for (c = calls->begin(); c != calls->end(); c++) {
488 provide(ss_texture.str(), *c);
495 if (strcmp(name, "glEnable") == 0) {
498 cap = static_cast<GLenum>(call->arg(0).toSInt());
500 if (cap == GL_TEXTURE_1D ||
501 cap == GL_TEXTURE_2D ||
502 cap == GL_TEXTURE_3D ||
503 cap == GL_TEXTURE_CUBE_MAP)
505 std::stringstream ss;
507 ss << "texture-unit-" << activeTextureUnit << "-target-" << cap;
509 link("render-state", ss.str());
512 provide("state", call->no);
516 if (strcmp(name, "glDisable") == 0) {
519 cap = static_cast<GLenum>(call->arg(0).toSInt());
521 if (cap == GL_TEXTURE_1D ||
522 cap == GL_TEXTURE_2D ||
523 cap == GL_TEXTURE_3D ||
524 cap == GL_TEXTURE_CUBE_MAP)
526 std::stringstream ss;
528 ss << "texture-unit-" << activeTextureUnit << "-target-" << cap;
530 unlink("render-state", ss.str());
533 provide("state", call->no);
537 if (strcmp(name, "glCreateShader") == 0 ||
538 strcmp(name, "glCreateShaderObjectARB") == 0) {
540 GLuint shader = call->ret->toUInt();
541 providef("shader-", shader, call->no);
545 if (strcmp(name, "glShaderSource") == 0 ||
546 strcmp(name, "glShaderSourceARB") == 0 ||
547 strcmp(name, "glCompileShader") == 0 ||
548 strcmp(name, "glCompileShaderARB") == 0 ||
549 strcmp(name, "glGetShaderiv") == 0 ||
550 strcmp(name, "glGetShaderInfoLog") == 0) {
552 GLuint shader = call->arg(0).toUInt();
553 providef("shader-", shader, call->no);
557 if (strcmp(name, "glCreateProgram") == 0 ||
558 strcmp(name, "glCreateProgramObjectARB") == 0) {
560 GLuint program = call->ret->toUInt();
561 providef("program-", program, call->no);
565 if (strcmp(name, "glAttachShader") == 0 ||
566 strcmp(name, "glAttachObjectARB") == 0) {
568 GLuint program, shader;
569 std::stringstream ss_program, ss_shader;
571 program = call->arg(0).toUInt();
572 shader = call->arg(1).toUInt();
574 ss_program << "program-" << program;
575 ss_shader << "shader-" << shader;
577 link(ss_program.str(), ss_shader.str());
578 provide(ss_program.str(), call->no);
583 if (strcmp(name, "glDetachShader") == 0 ||
584 strcmp(name, "glDetachObjectARB") == 0) {
586 GLuint program, shader;
587 std::stringstream ss_program, ss_shader;
589 program = call->arg(0).toUInt();
590 shader = call->arg(1).toUInt();
592 ss_program << "program-" << program;
593 ss_shader << "shader-" << shader;
595 unlink(ss_program.str(), ss_shader.str());
600 if (strcmp(name, "glUseProgram") == 0 ||
601 strcmp(name, "glUseProgramObjectARB") == 0) {
605 program = call->arg(0).toUInt();
607 unlinkAll("render-program-state");
610 unlink("render-state", "render-program-state");
611 provide("state", call->no);
613 std::stringstream ss;
615 ss << "program-" << program;
617 link("render-state", "render-program-state");
618 link("render-program-state", ss.str());
620 provide(ss.str(), call->no);
626 if (strcmp(name, "glGetUniformLocation") == 0 ||
627 strcmp(name, "glGetUniformLocationARB") == 0 ||
628 strcmp(name, "glGetFragDataLocation") == 0 ||
629 strcmp(name, "glGetFragDataLocationEXT") == 0 ||
630 strcmp(name, "glGetSubroutineUniformLocation") == 0 ||
631 strcmp(name, "glGetProgramResourceLocation") == 0 ||
632 strcmp(name, "glGetProgramResourceLocationIndex") == 0 ||
633 strcmp(name, "glGetVaryingLocationNV") == 0) {
635 GLuint program = call->arg(0).toUInt();
637 providef("program-", program, call->no);
642 /* For any call that accepts 'location' as its first argument,
643 * perform a lookup in our location->program map and add a
644 * dependence on the program we find there. */
645 if (call->sig->num_args > 0 &&
646 strcmp(call->sig->arg_names[0], "location") == 0) {
648 providef("program-", activeProgram, call->no);
650 /* We can't easily tell if this uniform is being used to
651 * associate a sampler in the shader with a texture
652 * unit. The conservative option is to assume that it is
653 * and create a link from the active program to any bound
654 * textures for the given unit number.
656 * FIXME: We should be doing the same thing for calls to
658 if (strcmp(name, "glUniform1i") == 0 ||
659 strcmp(name, "glUniform1iARB") == 0) {
661 GLint max_unit = MAX(GL_MAX_TEXTURE_COORDS, GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS);
663 GLint unit = call->arg(1).toSInt();
664 std::stringstream ss_program;
665 std::stringstream ss_texture;
667 if (unit < max_unit) {
669 ss_program << "program-" << activeProgram;
671 ss_texture << "texture-unit-" << GL_TEXTURE0 + unit << "-target-";
673 /* We don't know what target(s) might get bound to
674 * this texture unit, so conservatively link to
675 * all. Only bound textures will actually get inserted
676 * into the output call stream. */
677 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_1D);
678 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_2D);
679 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_3D);
680 linkf(ss_program.str(), ss_texture.str(), GL_TEXTURE_CUBE_MAP);
687 /* FIXME: We cut a huge swath by assuming that any unhandled
688 * call that has a first argument named "program" should not
689 * be included in the trimmed output unless the program of
690 * that number is also included.
692 * This heuristic is correct for many cases, but we should
693 * actually carefully verify if this includes some calls
694 * inappropriately, or if it misses some.
696 if (strcmp(name, "glLinkProgram") == 0 ||
697 strcmp(name, "glLinkProgramARB") == 0 ||
698 (call->sig->num_args > 0 &&
699 (strcmp(call->sig->arg_names[0], "program") == 0 ||
700 strcmp(call->sig->arg_names[0], "programObj") == 0))) {
702 GLuint program = call->arg(0).toUInt();
703 providef("program-", program, call->no);
707 /* Handle all rendering operations, (even though only glEnd is
708 * flagged as a rendering operation we treat everything from
709 * glBegin through glEnd as a rendering operation). */
710 if (call->flags & trace::CALL_FLAG_RENDER ||
713 std::set<unsigned> calls;
714 std::set<unsigned>::iterator c;
716 provide("framebuffer", call->no);
718 calls = resolve("render-state");
720 for (c = calls.begin(); c != calls.end(); c++) {
721 provide("framebuffer", *c);
724 /* In some cases, rendering has side effects beyond the
725 * framebuffer update. */
726 if (renderingHasSideEffect()) {
727 provide("state", call->no);
728 for (c = calls.begin(); c != calls.end(); c++) {
729 provide("state", *c);
736 /* By default, assume this call affects the state somehow. */
737 resources["state"].insert(call->no);
740 void requireDependencies(trace::Call *call) {
742 /* Swap-buffers calls depend on framebuffer state. */
743 if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
744 call->flags & trace::CALL_FLAG_END_FRAME) {
745 consume("framebuffer");
748 /* By default, just assume this call depends on generic state. */
754 TraceAnalyzer(): transformFeedbackActive(false),
755 framebufferObjectActive(false),
756 insideBeginEnd(false),
758 activeTextureUnit(GL_TEXTURE0)
763 /* Analyze this call by tracking state and recording all the
764 * resources provided by this call as side effects.. */
765 void analyze(trace::Call *call) {
767 stateTrackPreCall(call);
769 recordSideEffects(call);
771 stateTrackPostCall(call);
774 /* Require this call and all of its dependencies to be included in
775 * the final trace. */
776 void require(trace::Call *call) {
778 /* First, find and insert all calls that this call depends on. */
779 requireDependencies(call);
781 /* Then insert this call itself. */
782 required.insert(call->no);
785 /* Return a set of all the required calls, (both those calls added
786 * explicitly with require() and those implicitly depended
788 std::set<unsigned> *get_required(void) {
793 struct trim_options {
794 /* Calls to be included in trace. */
795 trace::CallSet calls;
797 /* Frames to be included in trace. */
798 trace::CallSet frames;
800 /* Whether dependency analysis should be performed. */
801 bool dependency_analysis;
803 /* Whether uninteresting calls should be pruned.. */
804 bool prune_uninteresting;
806 /* Output filename */
809 /* Emit only calls from this thread (-1 == all threads) */
812 /* Print resulting callset */
817 trim_trace(const char *filename, struct trim_options *options)
819 trace::ParseBookmark beginning;
821 TraceAnalyzer analyzer;
822 std::set<unsigned> *required;
824 int call_range_first, call_range_last;
826 if (!p.open(filename)) {
827 std::cerr << "error: failed to open " << filename << "\n";
831 /* Mark the beginning so we can return here for pass 2. */
832 p.getBookmark(beginning);
834 /* In pass 1, analyze which calls are needed. */
837 while ((call = p.parse_call())) {
839 /* There's no use doing any work past the last call or frame
840 * requested by the user. */
841 if (call->no > options->calls.getLast() ||
842 frame > options->frames.getLast()) {
848 /* If requested, ignore all calls not belonging to the specified thread. */
849 if (options->thread != -1 && call->thread_id != options->thread) {
853 /* Also, prune if uninteresting (unless the user asked for no pruning. */
854 if (options->prune_uninteresting && call->flags & trace::CALL_FLAG_UNINTERESTING) {
858 /* If this call is included in the user-specified call set,
859 * then require it (and all dependencies) in the trimmed
861 if (options->calls.contains(*call) ||
862 options->frames.contains(frame, call->flags)) {
864 analyzer.require(call);
867 /* Regardless of whether we include this call or not, we do
868 * some dependency tracking (unless disabled by the user). We
869 * do this even for calls we have included in the output so
870 * that any state updates get performed. */
871 if (options->dependency_analysis) {
872 analyzer.analyze(call);
876 if (call->flags & trace::CALL_FLAG_END_FRAME)
882 /* Prepare output file and writer for output. */
883 if (options->output.empty()) {
884 os::String base(filename);
885 base.trimExtension();
887 options->output = std::string(base.str()) + std::string("-trim.trace");
890 trace::Writer writer;
891 if (!writer.open(options->output.c_str())) {
892 std::cerr << "error: failed to create " << filename << "\n";
896 /* Reset bookmark for pass 2. */
897 p.setBookmark(beginning);
899 /* In pass 2, emit the calls that are required. */
900 required = analyzer.get_required();
903 call_range_first = -1;
904 call_range_last = -1;
905 while ((call = p.parse_call())) {
907 /* There's no use doing any work past the last call or frame
908 * requested by the user. */
909 if (call->no > options->calls.getLast() ||
910 frame > options->frames.getLast()) {
915 if (required->find(call->no) != required->end()) {
916 writer.writeCall(call);
918 if (options->print_callset) {
919 if (call_range_first < 0) {
920 call_range_first = call->no;
921 printf ("%d", call_range_first);
922 } else if (call->no != call_range_last + 1) {
923 if (call_range_last != call_range_first)
924 printf ("-%d", call_range_last);
925 call_range_first = call->no;
926 printf (",%d", call_range_first);
928 call_range_last = call->no;
932 if (call->flags & trace::CALL_FLAG_END_FRAME) {
939 if (options->print_callset) {
940 if (call_range_last != call_range_first)
941 printf ("-%d\n", call_range_last);
944 std::cout << "Trimmed trace is available as " << options->output << "\n";
950 command(int argc, char *argv[])
952 struct trim_options options;
954 options.calls = trace::CallSet(trace::FREQUENCY_NONE);
955 options.frames = trace::CallSet(trace::FREQUENCY_NONE);
956 options.dependency_analysis = true;
957 options.prune_uninteresting = true;
960 options.print_callset = 0;
963 while ((opt = getopt_long(argc, argv, shortOptions, longOptions, NULL)) != -1) {
969 options.calls = trace::CallSet(optarg);
972 options.frames = trace::CallSet(optarg);
975 options.dependency_analysis = true;
978 options.dependency_analysis = false;
981 options.prune_uninteresting = true;
984 options.prune_uninteresting = false;
987 options.dependency_analysis = false;
988 options.prune_uninteresting = false;
991 options.thread = atoi(optarg);
994 options.output = optarg;
996 case PRINT_CALLSET_OPT:
997 options.print_callset = 1;
1000 std::cerr << "error: unexpected option `" << opt << "`\n";
1006 /* If neither of --calls nor --frames was set, default to the
1007 * entire set of calls. */
1008 if (options.calls.empty() && options.frames.empty()) {
1009 options.calls = trace::CallSet(trace::FREQUENCY_ALL);
1012 if (optind >= argc) {
1013 std::cerr << "error: apitrace trim requires a trace file as an argument.\n";
1018 if (argc > optind + 1) {
1019 std::cerr << "error: extraneous arguments:";
1020 for (int i = optind + 1; i < argc; i++) {
1021 std::cerr << " " << argv[i];
1028 return trim_trace(argv[optind], &options);
1031 const Command trim_command = {