mirror of
https://github.com/jart/cosmopolitan.git
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226aaf3547
This commit makes numerous refinements to cosmopolitan memory handling.
The default stack size has been reduced from 2mb to 128kb. A new macro
is now provided so you can easily reconfigure the stack size to be any
value you want. Work around the breaking change by adding to your main:
STATIC_STACK_SIZE(0x00200000); // 2mb stack
If you're not sure how much stack you need, then you can use:
STATIC_YOINK("stack_usage_logging");
After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test
suite, nothing in the Cosmopolitan repository (except for Python) needs
a stack size greater than 30kb. There are also new macros for detecting
the size and address of the stack at runtime, e.g. GetStackAddr(). We
also now support sigaltstack() so if you want to see nice looking crash
reports whenever a stack overflow happens, you can put this in main():
ShowCrashReports();
Under `make MODE=dbg` and `make MODE=asan` the unit testing framework
will now automatically print backtraces of memory allocations when
things like memory leaks happen. Bugs are now fixed in ASAN global
variable overrun detection. The memtrack and asan runtimes also handle
edge cases now. The new tools helped to identify a few memory leaks,
which are fixed by this change.
This change should fix an issue reported in #288 with ARG_MAX limits.
Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
130 lines
6 KiB
C
130 lines
6 KiB
C
#ifndef COSMOPOLITAN_LIBC_STDIO_STDIO_H_
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#define COSMOPOLITAN_LIBC_STDIO_STDIO_H_
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#include "libc/fmt/pflink.h"
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#include "libc/runtime/symbolic.h"
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#define FILENAME_MAX PATH_MAX
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § standard i/o ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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typedef struct FILE {
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uint8_t bufmode; /* 0x00 _IOFBF, etc. (ignored if fd=-1) */
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bool noclose; /* 0x01 for fake dup() todo delete! */
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uint32_t iomode; /* 0x04 O_RDONLY, etc. (ignored if fd=-1) */
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int32_t state; /* 0x08 0=OK, -1=EOF, >0=errno */
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int fd; /* 0x0c ≥0=fd, -1=closed|buffer */
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uint32_t beg; /* 0x10 */
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uint32_t end; /* 0x14 */
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char *buf; /* 0x18 */
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uint32_t size; /* 0x20 */
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uint32_t nofree; /* 0x24 */
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int pid; /* 0x28 */
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char *getln;
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} FILE;
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extern FILE *stdin;
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extern FILE *stdout;
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extern FILE *stderr;
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errno_t ferror(FILE *) paramsnonnull();
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void clearerr(FILE *) paramsnonnull();
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int feof(FILE *) paramsnonnull();
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int getc(FILE *) paramsnonnull();
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int putc(int, FILE *) paramsnonnull();
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int fflush(FILE *);
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int fgetc(FILE *) paramsnonnull();
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int ungetc(int, FILE *) paramsnonnull();
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int fileno(FILE *) paramsnonnull() nosideeffect;
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int fputc(int, FILE *) paramsnonnull();
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int fputs(const char *, FILE *) paramsnonnull();
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int fputws(const wchar_t *, FILE *) paramsnonnull();
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char *fgets(char *, int, FILE *) paramsnonnull();
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wchar_t *fgetws(wchar_t *, int, FILE *) paramsnonnull();
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wint_t putwc(wchar_t, FILE *) paramsnonnull();
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wint_t fputwc(wchar_t, FILE *) paramsnonnull();
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wint_t putwchar(wchar_t);
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wint_t getwchar(void);
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wint_t getwc(FILE *) paramsnonnull();
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wint_t fgetwc(FILE *) paramsnonnull();
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wint_t ungetwc(wint_t, FILE *) paramsnonnull();
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int getchar(void);
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int putchar(int);
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int puts(const char *);
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ssize_t getline(char **, size_t *, FILE *) paramsnonnull();
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ssize_t getdelim(char **, size_t *, int, FILE *) paramsnonnull();
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FILE *fopen(const char *, const char *) paramsnonnull() nodiscard;
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FILE *fdopen(int, const char *) paramsnonnull() nodiscard;
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FILE *fmemopen(void *, size_t, const char *) paramsnonnull((3)) nodiscard;
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FILE *freopen(const char *, const char *, FILE *) paramsnonnull((2, 3));
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size_t fread(void *, size_t, size_t, FILE *) paramsnonnull((4));
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size_t fwrite(const void *, size_t, size_t, FILE *) paramsnonnull((4));
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int fclose(FILE *);
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int fclose_s(FILE **) paramsnonnull();
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int fseek(FILE *, long, int) paramsnonnull();
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long ftell(FILE *) paramsnonnull();
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int fseeko(FILE *, int64_t, int) paramsnonnull();
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int64_t ftello(FILE *) paramsnonnull();
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void rewind(FILE *) paramsnonnull();
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int fopenflags(const char *) paramsnonnull();
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void setbuf(FILE *, char *);
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void setbuffer(FILE *, char *, size_t);
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int setvbuf(FILE *, char *, int, size_t);
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FILE *popen(const char *, const char *);
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int pclose(FILE *);
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typedef uint64_t fpos_t;
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compatfn char *gets(char *) paramsnonnull();
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compatfn int fgetpos(FILE *, fpos_t *) paramsnonnull();
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compatfn int fsetpos(FILE *, const fpos_t *) paramsnonnull();
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int system(const char *);
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int systemexec(const char *);
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § standard i/o » formatting ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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int printf(const char *, ...) printfesque(1)
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paramsnonnull((1)) nothrow nocallback;
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int vprintf(const char *, va_list) paramsnonnull() nothrow nocallback;
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int fprintf(FILE *, const char *, ...) printfesque(2)
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paramsnonnull((1, 2)) nothrow nocallback;
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int vfprintf(FILE *, const char *, va_list) paramsnonnull() nothrow nocallback;
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int scanf(const char *, ...) scanfesque(1);
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int vscanf(const char *, va_list);
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int fscanf(FILE *, const char *, ...) scanfesque(2);
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int vfscanf(FILE *, const char *, va_list);
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § standard i/o » optimizations ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#define getc(f) fgetc(f)
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#define getwc(f) fgetwc(f)
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#define putc(c, f) fputc(c, f)
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#define putwc(c, f) fputwc(c, f)
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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#define printf(FMT, ...) (printf)(PFLINK(FMT), ##__VA_ARGS__)
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#define vprintf(FMT, VA) (vprintf)(PFLINK(FMT), VA)
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#define fprintf(F, FMT, ...) (fprintf)(F, PFLINK(FMT), ##__VA_ARGS__)
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#define vfprintf(F, FMT, VA) (vfprintf)(F, PFLINK(FMT), VA)
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#define vscanf(FMT, VA) (vscanf)(SFLINK(FMT), VA)
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#define scanf(FMT, ...) (scanf)(SFLINK(FMT), ##__VA_ARGS__)
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#define fscanf(F, FMT, ...) (fscanf)(F, SFLINK(FMT), ##__VA_ARGS__)
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#define vfscanf(F, FMT, VA) (vfscanf)(F, SFLINK(FMT), VA)
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#endif
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#define stdin SYMBOLIC(stdin)
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#define stdout SYMBOLIC(stdout)
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#define stderr SYMBOLIC(stderr)
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#endif /* COSMOPOLITAN_LIBC_STDIO_STDIO_H_ */
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