aboutsummaryrefslogtreecommitdiffhomepage
path: root/tools/ok.cpp
blob: edda9bede0451374b006dba99943b06a4f61ddee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

// ok is an experimental test harness, maybe to replace DM.  Key features:
//   * work is balanced across separate processes for stability and isolation;
//   * ok is entirely opt-in.  No more maintaining huge --blacklists.

#include "SkGraphics.h"
#include "SkImage.h"
#include "ok.h"
#include <chrono>
#include <future>
#include <list>
#include <stdio.h>
#include <stdlib.h>
#include <thread>
#include <vector>

#if !defined(__has_include)
    #define  __has_include(x) 0
#endif

static thread_local const char* tls_currently_running = "";

#if __has_include(<execinfo.h>) && __has_include(<fcntl.h>) && __has_include(<signal.h>)
    #include <execinfo.h>
    #include <fcntl.h>
    #include <signal.h>

    static int log_fd = 2/*stderr*/;

    static void log(const char* msg) {
        write(log_fd, msg, strlen(msg));
    }

    static void setup_crash_handler() {
        static void (*original_handlers[32])(int);
        for (int sig : std::vector<int>{ SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGSEGV }) {
            original_handlers[sig] = signal(sig, [](int sig) {
                lockf(log_fd, F_LOCK, 0);
                    log("\ncaught signal ");
                    switch (sig) {
                    #define CASE(s) case s: log(#s); break
                        CASE(SIGABRT);
                        CASE(SIGBUS);
                        CASE(SIGFPE);
                        CASE(SIGILL);
                        CASE(SIGSEGV);
                    #undef CASE
                    }
                    log(" while running '");
                    log(tls_currently_running);
                    log("'\n");

                    void* stack[128];
                    int frames = backtrace(stack, sizeof(stack)/sizeof(*stack));
                    backtrace_symbols_fd(stack, frames, log_fd);
                lockf(log_fd, F_ULOCK, 0);

                signal(sig, original_handlers[sig]);
                raise(sig);
            });
        }
    }

    static void defer_logging() {
        log_fd = fileno(tmpfile());
        atexit([] {
            lseek(log_fd, 0, SEEK_SET);
            char buf[1024];
            while (size_t bytes = read(log_fd, buf, sizeof(buf))) {
                write(2, buf, bytes);
            }
        });
    }

    void ok_log(const char* msg) {
        lockf(log_fd, F_LOCK, 0);
            log("[");
            log(tls_currently_running);
            log("]\t");
            log(msg);
            log("\n");
        lockf(log_fd, F_ULOCK, 0);
    }

#else
    static void setup_crash_handler() {}
    static void defer_logging() {}

    void ok_log(const char* msg) {
        fprintf(stderr, "%s\n", msg);
    }
#endif

struct Engine {
    virtual ~Engine() {}
    virtual bool spawn(std::function<Status(void)>) = 0;
    virtual Status wait_one() = 0;
};

struct SerialEngine : Engine {
    Status last = Status::None;

    bool spawn(std::function<Status(void)> fn) override {
        last = fn();
        return true;
    }

    Status wait_one() override {
        Status s = last;
        last = Status::None;
        return s;
    }
};

struct ThreadEngine : Engine {
    std::list<std::future<Status>> live;
    const std::chrono::steady_clock::time_point the_past = std::chrono::steady_clock::now();

    bool spawn(std::function<Status(void)> fn) override {
        live.push_back(std::async(std::launch::async, fn));
        return true;
    }

    Status wait_one() override {
        if (live.empty()) {
            return Status::None;
        }

        for (;;) {
            for (auto it = live.begin(); it != live.end(); it++) {
                if (it->wait_until(the_past) == std::future_status::ready) {
                    Status s = it->get();
                    live.erase(it);
                    return s;
                }
            }
        }
    }
};

#if defined(_MSC_VER)
    using ForkEngine = ThreadEngine;
#else
    #include <sys/wait.h>
    #include <unistd.h>

    struct ForkEngine : Engine {
        bool spawn(std::function<Status(void)> fn) override {
            switch (fork()) {
                case  0: _exit((int)fn());
                case -1: return false;
                default: return true;
            }
        }

        Status wait_one() override {
            do {
                int status;
                if (wait(&status) > 0) {
                    return WIFEXITED(status) ? (Status)WEXITSTATUS(status)
                                             : Status::Crashed;
                }
            } while (errno == EINTR);
            return Status::None;
        }
    };
#endif

struct StreamType {
    const char *name, *help;
    std::unique_ptr<Stream> (*factory)(Options);
};
static std::vector<StreamType> stream_types;

struct DstType {
    const char *name, *help;
    std::unique_ptr<Dst> (*factory)(Options);
};
static std::vector<DstType> dst_types;

struct ViaType {
    const char *name, *help;
    std::unique_ptr<Dst> (*factory)(Options, std::unique_ptr<Dst>);
};
static std::vector<ViaType> via_types;

template <typename T>
static std::string help_for(std::vector<T> registered) {
    std::string help;
    for (auto r : registered) {
        help += "\n    ";
        help += r.name;
        help += ": ";
        help += r.help;
    }
    return help;
}

int main(int argc, char** argv) {
    SkGraphics::Init();
    setup_crash_handler();

    int                                       jobs{1};
    std::unique_ptr<Stream>                   stream;
    std::function<std::unique_ptr<Dst>(void)> dst_factory = []{
        // A default Dst that's enough for unit tests and not much else.
        struct : Dst {
            Status draw(Src* src)  override { return src->draw(nullptr); }
            sk_sp<SkImage> image() override { return nullptr; }
        } dst;
        return move_unique(dst);
    };

    auto help = [&] {
        std::string stream_help = help_for(stream_types),
                       dst_help = help_for(   dst_types),
                       via_help = help_for(   via_types);

        printf("%s [-j N] src[:k=v,...] dst[:k=v,...] [via[:k=v,...] ...]            \n"
                "  -j: Run at most N processes at any time.                          \n"
                "      If <0, use -N threads instead.                                \n"
                "      If 0, use one thread in one process.                          \n"
                "      If 1 (default) or -1, auto-detect N.                          \n"
                " src: content to draw%s                                             \n"
                " dst: how to draw that content%s                                    \n"
                " via: wrappers around dst%s                                         \n"
                " Most srcs, dsts and vias have options, e.g. skp:dir=skps sw:ct=565 \n",
                argv[0], stream_help.c_str(), dst_help.c_str(), via_help.c_str());
        return 1;
    };

    for (int i = 1; i < argc; i++) {
        if (0 == strcmp("-j",     argv[i])) { jobs = atoi(argv[++i]); }
        if (0 == strcmp("-h",     argv[i])) { return help(); }
        if (0 == strcmp("--help", argv[i])) { return help(); }

        for (auto s : stream_types) {
            size_t len = strlen(s.name);
            if (0 == strncmp(s.name, argv[i], len)) {
                switch (argv[i][len]) {
                    case  ':': len++;
                    case '\0': stream = s.factory(Options{argv[i]+len});
                }
            }
        }
        for (auto d : dst_types) {
            size_t len = strlen(d.name);
            if (0 == strncmp(d.name, argv[i], len)) {
                switch (argv[i][len]) {
                    case  ':': len++;
                    case '\0': dst_factory = [=]{
                                   return d.factory(Options{argv[i]+len});
                               };
                }
            }
        }
        for (auto v : via_types) {
            size_t len = strlen(v.name);
            if (0 == strncmp(v.name, argv[i], len)) {
                if (!dst_factory) { return help(); }
                switch (argv[i][len]) {
                    case  ':': len++;
                    case '\0': dst_factory = [=]{
                                   return v.factory(Options{argv[i]+len}, dst_factory());
                               };
                }
            }
        }
    }
    if (!stream) { return help(); }

    std::unique_ptr<Engine> engine;
    if (jobs == 0) { engine.reset(new SerialEngine);                  }
    if (jobs  > 0) { engine.reset(new   ForkEngine); defer_logging(); }
    if (jobs  < 0) { engine.reset(new ThreadEngine); jobs = -jobs;    }

    if (jobs == 1) { jobs = std::thread::hardware_concurrency(); }

    int ok = 0, failed = 0, crashed = 0, skipped = 0;

    auto update_stats = [&](Status s) {
        switch (s) {
            case Status::OK:      ok++;      break;
            case Status::Failed:  failed++;  break;
            case Status::Crashed: crashed++; break;
            case Status::Skipped: skipped++; break;
            case Status::None:              return;
        }
        const char* leader = "\r";
        auto print = [&](int count, const char* label) {
            if (count) {
                printf("%s%d %s", leader, count, label);
                leader = ", ";
            }
        };
        print(ok,      "ok");
        print(failed,  "failed");
        print(crashed, "crashed");
        print(skipped, "skipped");
        fflush(stdout);
    };

    auto spawn = [&](std::function<Status(void)> fn) {
        if (--jobs < 0) {
            update_stats(engine->wait_one());
        }
        while (!engine->spawn(fn)) {
            update_stats(engine->wait_one());
        }
    };

    for (std::unique_ptr<Src> owned = stream->next(); owned; owned = stream->next()) {
        Src* raw = owned.release();  // Can't move std::unique_ptr into a lambda in C++11. :(
        spawn([=] {
            std::unique_ptr<Src> src{raw};

            std::string name = src->name();
            tls_currently_running = name.c_str();

            return dst_factory()->draw(src.get());
        });
    }

    for (Status s = Status::OK; s != Status::None; ) {
        s = engine->wait_one();
        update_stats(s);
    }
    printf("\n");
    return (failed || crashed) ? 1 : 0;
}


Register::Register(const char* name, const char* help,
                   std::unique_ptr<Stream> (*factory)(Options)) {
    stream_types.push_back(StreamType{name, help, factory});
}
Register::Register(const char* name, const char* help,
                   std::unique_ptr<Dst> (*factory)(Options)) {
    dst_types.push_back(DstType{name, help, factory});
}
Register::Register(const char* name, const char* help,
                   std::unique_ptr<Dst> (*factory)(Options, std::unique_ptr<Dst>)) {
    via_types.push_back(ViaType{name, help, factory});
}

Options::Options(std::string str) {
    std::string k,v, *curr = &k;
    for (auto c : str) {
        switch(c) {
            case ',': (*this)[k] = v;
                      curr = &(k = "");
                      break;
            case '=': curr = &(v = "");
                      break;
            default: *curr += c;
        }
    }
    (*this)[k] = v;
}

std::string& Options::operator[](std::string k) { return this->kv[k]; }

std::string Options::operator()(std::string k, std::string fallback) const {
    for (auto it = kv.find(k); it != kv.end(); ) {
        return it->second;
    }
    return fallback;
}