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Split init_funcname

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Extract `build_funcname` that takes the prefix as an argument, and
`concat_funcname` that concats the parts.
This commit is contained in:
Nobuyoshi Nakada 2024-02-22 13:24:42 +09:00
parent 9f8f32bf9f
commit 97a39ccc2c
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GPG Key ID: 3582D74E1FEE4465
1 changed files with 16 additions and 10 deletions
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26
dln.c
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@ -122,21 +122,27 @@ init_funcname_len(const char **file)
return (dot ? dot : p) - base; return (dot ? dot : p) - base;
} }
static const char funcname_prefix[sizeof(FUNCNAME_PREFIX) - 1] = FUNCNAME_PREFIX; static inline char *
concat_funcname(char *buf, const char *prefix, size_t plen, const char *base, size_t flen)
{
if (!buf) {
dln_memerror();
}
memcpy(buf, prefix, plen);
memcpy(buf + plen, base, flen);
buf[plen + flen] = '\0';
return buf;
}
#define init_funcname(buf, file) do {\ #define build_funcname(prefix, buf, file) do {\
const char *base = (file);\ const char *base = (file);\
const size_t flen = init_funcname_len(&base);\ const size_t flen = init_funcname_len(&base);\
const size_t plen = sizeof(funcname_prefix);\ const size_t plen = sizeof(prefix "") - 1;\
char *const tmp = ALLOCA_N(char, plen+flen+1);\ char *const tmp = ALLOCA_N(char, plen+flen+1);\
if (!tmp) {\ *(buf) = concat_funcname(tmp, prefix, plen, base, flen);\
dln_memerror();\
}\
memcpy(tmp, funcname_prefix, plen);\
memcpy(tmp+plen, base, flen);\
tmp[plen+flen] = '\0';\
*(buf) = tmp;\
} while (0) } while (0)
#define init_funcname(buf, file) build_funcname(FUNCNAME_PREFIX, buf, file)
#endif #endif
#ifdef USE_DLN_DLOPEN #ifdef USE_DLN_DLOPEN