mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-12 01:08:00 +00:00
f7780de24b
Cosmopolitan now supports mremap(), which is only supported on Linux and NetBSD. First, it allows memory mappings to be relocated without copying them; this can dramatically speed up data structures like std::vector if the array size grows larger than 256kb. The mremap() system call is also 10x faster than munmap() when shrinking large memory mappings. There's now two functions, getpagesize() and getgransize() which help to write portable code that uses mmap(MAP_FIXED). Alternative sysconf() may be called with our new _SC_GRANSIZE. The madvise() system call now has a better wrapper with improved documentation.
151 lines
5.7 KiB
C
151 lines
5.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_RUNTIME_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_RUNTIME_H_
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § runtime ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#ifdef __x86_64__
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typedef long jmp_buf[8];
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typedef long sigjmp_buf[11];
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#elif defined(__aarch64__)
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typedef long jmp_buf[22];
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typedef long sigjmp_buf[25];
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#elif defined(__powerpc64__)
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typedef unsigned __int128 jmp_buf[32];
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#elif defined(__s390x__)
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typedef unsigned long jmp_buf[18];
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#elif defined(__riscv)
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typedef unsigned long jmp_buf[26];
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#endif
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void mcount(void) libcesque;
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int daemon(int, int) libcesque;
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unsigned long getauxval(unsigned long) libcesque;
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int setjmp(jmp_buf)
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libcesque returnstwice paramsnonnull();
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void longjmp(jmp_buf, int) libcesque wontreturn paramsnonnull();
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int _setjmp(jmp_buf)
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libcesque returnstwice paramsnonnull();
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int sigsetjmp(sigjmp_buf, int) libcesque returnstwice paramsnonnull();
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void siglongjmp(sigjmp_buf, int) libcesque wontreturn paramsnonnull();
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void _longjmp(jmp_buf, int) libcesque wontreturn paramsnonnull();
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void exit(int) wontreturn;
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void _exit(int) libcesque wontreturn;
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void _Exit(int) libcesque wontreturn;
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void quick_exit(int) wontreturn;
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void abort(void) wontreturn;
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int atexit(void (*)(void)) paramsnonnull() libcesque;
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char *getenv(const char *) paramsnonnull() __wur nosideeffect libcesque;
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int putenv(char *) libcesque;
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int setenv(const char *, const char *, int) libcesque;
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int unsetenv(const char *) libcesque;
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int clearenv(void) libcesque;
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void fpreset(void) libcesque;
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void *mmap(void *, uint64_t, int32_t, int32_t, int32_t, int64_t) libcesque;
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void *mremap(void *, size_t, size_t, int, ...) libcesque;
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int munmap(void *, uint64_t) libcesque;
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int mprotect(void *, uint64_t, int) libcesque;
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int msync(void *, size_t, int) libcesque;
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int mlock(const void *, size_t) libcesque;
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int munlock(const void *, size_t) libcesque;
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long gethostid(void) libcesque;
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int sethostid(long) libcesque;
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char *getlogin(void) libcesque;
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int getlogin_r(char *, size_t) libcesque;
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int login_tty(int) libcesque;
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int getpagesize(void) pureconst libcesque;
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int getgransize(void) pureconst libcesque;
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int syncfs(int) dontthrow libcesque;
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int vhangup(void) libcesque;
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int getdtablesize(void) libcesque;
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int sethostname(const char *, size_t) libcesque;
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int acct(const char *) libcesque;
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#if defined(_GNU_SOURCE) || defined(_COSMO_SOURCE)
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extern char **environ;
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char *secure_getenv(const char *) paramsnonnull() __wur nosideeffect libcesque;
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#endif
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#ifdef _COSMO_SOURCE
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extern int __argc;
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extern char **__argv;
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extern char **__envp;
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extern unsigned long *__auxv;
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extern intptr_t __oldstack;
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extern char *__program_executable_name;
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extern uint64_t __nosync;
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extern int __strace;
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extern int __ftrace;
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extern uint64_t __syscount;
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extern uint64_t kStartTsc;
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extern const char kNtSystemDirectory[];
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extern const char kNtWindowsDirectory[];
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extern size_t __virtualmax;
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extern size_t __virtualsize;
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extern size_t __stackmax;
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extern bool32 __isworker;
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/* utilities */
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void _intsort(int *, size_t) libcesque;
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void _longsort(long *, size_t) libcesque;
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/* diagnostics */
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void ShowCrashReports(void) libcesque;
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int ftrace_install(void) libcesque;
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int ftrace_enabled(int) libcesque;
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int strace_enabled(int) libcesque;
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void __print_maps(size_t) libcesque;
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void __printargs(const char *) libcesque;
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/* builtin sh-like system/popen dsl */
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int _cocmd(int, char **, char **) libcesque;
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/* executable program */
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char *GetProgramExecutableName(void) libcesque;
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char *GetInterpreterExecutableName(char *, size_t) libcesque;
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int __open_executable(void) libcesque;
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/* execution control */
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int verynice(void) libcesque;
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void __warn_if_powersave(void) libcesque;
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void _Exit1(int) libcesque wontreturn libcesque;
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void __paginate(int, const char *) libcesque;
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void __paginate_file(int, const char *) libcesque;
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/* memory management */
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void _weakfree(void *) libcesque;
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void *_mapanon(size_t) attributeallocsize((1)) mallocesque libcesque;
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void *_mapshared(size_t) attributeallocsize((1)) mallocesque libcesque;
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void CheckForFileLeaks(void) libcesque;
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void __enable_threads(void) libcesque;
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void __oom_hook(size_t) libcesque;
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/* code morphing */
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void __morph_begin(void) libcesque;
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void __morph_end(void) libcesque;
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void __jit_begin(void) libcesque;
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void __jit_end(void) libcesque;
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void __clear_cache(void *, void *) libcesque;
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/* portability */
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bool32 IsGenuineBlink(void) libcesque;
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bool32 IsCygwin(void) libcesque;
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const char *GetCpuidOs(void) libcesque;
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const char *GetCpuidEmulator(void) libcesque;
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void GetCpuidBrand(char[13], uint32_t) libcesque;
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long __get_rlimit(int) libcesque;
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const char *__describe_os(void) libcesque;
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long __get_sysctl(int, int) libcesque;
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int __get_arg_max(void) pureconst libcesque;
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int __get_cpu_count(void) pureconst libcesque;
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long __get_avphys_pages(void) pureconst libcesque;
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long __get_phys_pages(void) pureconst libcesque;
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long __get_minsigstksz(void) pureconst libcesque;
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long __get_safe_size(long, long) libcesque;
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char *__get_tmpdir(void) libcesque;
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forceinline int __trace_disabled(int x) {
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return 0;
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}
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#ifndef FTRACE
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#define ftrace_enabled(...) __trace_disabled(__VA_ARGS__)
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#endif
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#ifndef SYSDEBUG
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#define strace_enabled(...) __trace_disabled(__VA_ARGS__)
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#endif
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#endif /* _COSMO_SOURCE */
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_RUNTIME_H_ */
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