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Expose public garbage collector API for C language

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You can now do epic things like this:

    puts(_gc(xasprintf("%d", 123)));

The _gc() API is shorthand for _defer() which works like Go's keyword:

    const char *s = xasprintf("%d", 123);
    _defer(free, s);
    puts(s);

Be sure to always use -fno-omit-frame-pointer which makes code fast too.

Enjoy! See also #114
This commit is contained in:
Justine Tunney 2021-03-08 10:56:09 -08:00
parent 0ad609268f
commit 33e8fc8687
26 changed files with 192 additions and 182 deletions
Download patch file Download diff file Expand all files Collapse all files

2
test/libc/release/smoke.c
View file

@ -6,7 +6,7 @@ int main(int argc, char *argv[]) {
s = strdup(argv[0]);
s[0] = 'Z';
f = fopen("/dev/null", "w");
fprintf(f, "hello world %d %s\n", argc, s);
fputs(_gc(xasprintf("hello world %d %s\n", argc, s)), f);
fclose(f);
rc = system("exit 42");
CHECK_NE(-1, rc);

8
test/libc/runtime/grow_test.c
View file

@ -46,9 +46,9 @@ TEST(grow, testStackMemory_convertsToDynamic) {
int A[] = {1, 2, 3};
int *p = A;
size_t capacity = ARRAYLEN(A);
if (!isheap(p)) {
if (!_isheap(p)) {
EXPECT_TRUE(__grow(&p, &capacity, sizeof(int), 0));
EXPECT_TRUE(isheap(p));
EXPECT_TRUE(_isheap(p));
EXPECT_GT(capacity, ARRAYLEN(A));
EXPECT_EQ(1, p[0]);
EXPECT_EQ(2, p[1]);
@ -86,9 +86,9 @@ TEST(grow, testOverflow_returnsFalseAndDoesNotFree) {
int A[] = {1, 2, 3};
int *p = A;
size_t capacity = ARRAYLEN(A);
if (!isheap(p)) {
if (!_isheap(p)) {
EXPECT_FALSE(__grow(&p, &capacity, pushpop(SIZE_MAX), 0));
EXPECT_FALSE(isheap(p));
EXPECT_FALSE(_isheap(p));
EXPECT_EQ(capacity, ARRAYLEN(A));
EXPECT_EQ(1, p[0]);
EXPECT_EQ(2, p[1]);

8
test/libc/runtime/mmap_test.c
View file

@ -137,18 +137,18 @@ TEST(mmap, mapPrivate_writesDontChangeFile) {
}
TEST(isheap, nullPtr) {
ASSERT_FALSE(isheap(NULL));
ASSERT_FALSE(_isheap(NULL));
}
TEST(isheap, malloc) {
ASSERT_TRUE(isheap(gc(malloc(1))));
ASSERT_TRUE(_isheap(gc(malloc(1))));
}
TEST(isheap, emptyMalloc) {
ASSERT_TRUE(isheap(gc(malloc(0))));
ASSERT_TRUE(_isheap(gc(malloc(0))));
}
TEST(isheap, mallocOffset) {
char *p = gc(malloc(131072));
ASSERT_TRUE(isheap(p + 100000));
ASSERT_TRUE(_isheap(p + 100000));
}