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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
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22
libc/runtime/runtime.h
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@ -33,7 +33,6 @@ extern unsigned char *__relo_end[]; /* αpε */
extern uint8_t __zip_start[]; /* αpε */
extern uint8_t __zip_end[]; /* αpε */
long missingno();
void mcount(void);
unsigned long getauxval(unsigned long);
void *mapanon(size_t) vallocesque attributeallocsize((1));
@ -45,34 +44,35 @@ void exit(int) wontreturn;
void _exit(int) libcesque wontreturn;
void _Exit(int) libcesque wontreturn;
void abort(void) wontreturn noinstrument;
void triplf(void) wontreturn noinstrument privileged;
int __cxa_atexit(void *, void *, void *) libcesque;
int atfork(void *, void *) libcesque;
int atexit(void (*)(void)) libcesque;
void free_s(void *) paramsnonnull() libcesque;
int close_s(int *) paramsnonnull() libcesque;
char *getenv(const char *) paramsnonnull() nosideeffect libcesque;
int putenv(char *) paramsnonnull();
int setenv(const char *, const char *, int) paramsnonnull();
int unsetenv(const char *);
int clearenv(void);
void fpreset(void);
void savexmm(void *);
void loadxmm(void *);
void peekall(void);
int issetugid(void);
void weakfree(void *) libcesque;
bool isheap(void *);
void *mmap(void *, uint64_t, int32_t, int32_t, int32_t, int64_t);
void *mremap(void *, uint64_t, uint64_t, int32_t, void *);
int munmap(void *, uint64_t);
int mprotect(void *, uint64_t, int) privileged;
int msync(void *, size_t, int);
void __print(const void *, size_t);
void __print_string(const char *);
void *sbrk(intptr_t);
int brk(void *);
bool _isheap(void *);
int NtGetVersion(void);
long missingno();
void __print(const void *, size_t);
void __print_string(const char *);
void _loadxmm(void *);
void _peekall(void);
void _savexmm(void *);
void _weakfree(void *);
void free_s(void *) paramsnonnull() libcesque;
int close_s(int *) paramsnonnull() libcesque;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */