cosmopolitan/libc/log/countbranch.h
Justine Tunney 39bf41f4eb Make numerous improvements
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- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
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- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
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- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands
2021-09-28 01:52:34 -07:00

58 lines
2.7 KiB
C

#ifndef COSMOPOLITAN_LIBC_LOG_COUNTBRANCH_H_
#define COSMOPOLITAN_LIBC_LOG_COUNTBRANCH_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#include "libc/macros.internal.h"
#define COUNTBRANCH(x) COUNTBRANCH_(x, #x, STRINGIFY(__FILE__), __LINE__)
#define COUNTBRANCH_(x, xs, file, line) \
COUNTBRANCH__(x, STRINGIFY(xs), STRINGIFY(#x), file, line)
#define COUNTBRANCH__(x, xs, xss, file, line) \
({ \
bool Cond; \
struct countbranch *Info; \
asm(".section .rodata.str1.1,\"aMS\",@progbits,1\n\t" \
".align\t1\n" \
"31338:\t" \
".asciz\t" xs "\n" \
"31339:\t" \
".asciz\t" xss "\n" \
"31340:\t" \
".asciz\t" file "\n\t" \
".previous\n\t" \
".section .yoink\n\t" \
"nopl\tcountbranch_data(%%rip)\n\t" \
".previous\n\t" \
".section .sort.data.countbranch.2,\"a\",@progbits\n\t" \
".align\t8\n31337:\t" \
".quad\t0\n\t" \
".quad\t0\n\t" \
".quad\t31338b\n\t" \
".quad\t31339b\n\t" \
".quad\t31340b\n\t" \
".quad\t" #line "\n\t" \
".previous\n\t" \
"lea\t31337b(%%rip),%0" \
: "=r"(Info)); \
Cond = (x); \
++Info->total; \
if (Cond) ++Info->taken; \
Cond; \
})
struct countbranch {
long total;
long taken;
const char *code;
const char *xcode;
const char *file;
int line;
};
extern struct countbranch countbranch_data[];
void countbranch_report(void);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_LOG_COUNTBRANCH_H_ */