mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-13 00:52:39 +00:00
a4b455185b
Renaming gc() to _gc() was a mistake since the better thing to do is put it behind the _COSMO_SOURCE macro. We need this change because I haven't wanted to use my amazing garbage collector ever since we renamed it. You now need to define _COSMO_SOURCE yourself when using amalgamation header and cosmocc users need to pass the -mcosmo flag to get the gc() function Some other issues relating to cancelation have been fixed along the way. We're also now putting cosmocc in a folder named `.cosmocc` so it can be more safely excluded by grep --exclude-dir=.cosmocc --exclude-dir=o etc.
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/log/log.h"
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#include "libc/mem/gc.h"
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#include "libc/mem/mem.h"
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#include "libc/nexgen32e/nexgen32e.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/thread.h"
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#include "libc/x/x.h"
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#ifdef __x86_64__
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// TODO(jart): get gclongjmp() working properly on aarch64
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#define GC(x) defer(Free, x)
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char *x;
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char *y;
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char *z;
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jmp_buf jb;
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void Free(char *p) {
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strcpy(p, "FREE");
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}
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void C(void) {
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x = GC(strdup("abcd"));
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if (0) PrintGarbage();
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gclongjmp(jb, 1);
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abort();
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}
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void B(void C(void)) {
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y = GC(strdup("HIHI"));
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C();
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abort();
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}
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void A(void C(void), void B(void(void))) {
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z = GC(strdup("yoyo"));
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B(C);
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abort();
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}
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void (*Ap)(void(void), void(void(void))) = A;
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void (*Bp)(void(void)) = B;
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void (*Cp)(void) = C;
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TEST(gclongjmp, test) {
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if (0) PrintGarbage();
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if (!setjmp(jb)) {
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Ap(Cp, Bp);
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abort();
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}
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if (0) PrintGarbage();
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EXPECT_STREQ("FREE", x);
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EXPECT_STREQ("FREE", y);
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EXPECT_STREQ("FREE", z);
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free(z);
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free(y);
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free(x);
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}
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void crawl(const char *path) {
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if (!strcmp(path, "/") || !strcmp(path, ".")) return;
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crawl(gc(xdirname(path)));
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}
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void *Worker(void *arg) {
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crawl("a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d");
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return 0;
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}
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TEST(gc, torture) {
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int i, n = 32;
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pthread_t *t = gc(malloc(sizeof(pthread_t) * n));
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for (i = 0; i < n; ++i) ASSERT_SYS(0, 0, pthread_create(t + i, 0, Worker, 0));
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for (i = 0; i < n; ++i) EXPECT_SYS(0, 0, pthread_join(t[i], 0));
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}
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void crawl2(jmp_buf jb, const char *path) {
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if (!strcmp(path, "/") || !strcmp(path, ".")) gclongjmp(jb, 1);
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crawl2(jb, gc(xdirname(path)));
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}
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void *Worker2(void *arg) {
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jmp_buf jb;
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if (!setjmp(jb)) {
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crawl2(jb, "a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d/a/b/c/d");
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}
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return 0;
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}
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TEST(gclongjmp, torture) {
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int i, n = 32;
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pthread_t *t = gc(malloc(sizeof(pthread_t) * n));
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for (i = 0; i < n; ++i) {
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ASSERT_SYS(0, 0, pthread_create(t + i, 0, Worker2, 0));
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}
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for (i = 0; i < n; ++i) {
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EXPECT_SYS(0, 0, pthread_join(t[i], 0));
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}
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}
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dontinline void F1(void) {
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/* 3x slower than F2() but sooo worth it */
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gc(malloc(16));
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}
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dontinline void F2(void) {
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void *volatile p;
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p = malloc(16);
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free(p);
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}
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void (*F1p)(void) = F1;
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void (*F2p)(void) = F2;
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BENCH(gc, bench) {
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EZBENCH2("gc(malloc(16))", donothing, F1p());
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EZBENCH2("free(malloc(16))", donothing, F2p());
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}
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#endif /* __x86_64__ */
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