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gc.c: unit suffix

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* gc.c (get_envparam_size): accept unit suffix 'k', 'm', and 'g'.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44936 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-02-14 05:04:07 +00:00
parent 4d33c0e965
commit aff08cfcd7
1 changed files with 24 additions and 1 deletions
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25
gc.c
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@ -5663,16 +5663,39 @@ get_envparam_size(const char *name, size_t *default_value, size_t lower_bound)
ssize_t val; ssize_t val;
if (ptr != NULL && *ptr) { if (ptr != NULL && *ptr) {
size_t unit = 0;
char *end; char *end;
#if SIZEOF_SIZE_T == SIZEOF_LONG_LONG #if SIZEOF_SIZE_T == SIZEOF_LONG_LONG
val = strtoll(ptr, &end, 0); val = strtoll(ptr, &end, 0);
#else #else
val = strtol(ptr, &end, 0); val = strtol(ptr, &end, 0);
#endif #endif
if (!*ptr || *end) { switch (*end) {
case 'k': case 'K':
unit = 1024;
++end;
break;
case 'm': case 'M':
unit = 1024*1024;
++end;
break;
case 'g': case 'G':
unit = 1024*1024*1024;
++end;
break;
}
while (*end && isspace(*end)) end++;
if (*end) {
if (RTEST(ruby_verbose)) fprintf(stderr, "invalid string for %s: %s\n", name, ptr); if (RTEST(ruby_verbose)) fprintf(stderr, "invalid string for %s: %s\n", name, ptr);
return 0; return 0;
} }
if (unit > 0) {
if (val < -(ssize_t)(SIZE_MAX / 2 / unit) || (ssize_t)(SIZE_MAX / 2 / unit) < val) {
if (RTEST(ruby_verbose)) fprintf(stderr, "%s=%s is ignored because it overflows\n", name, ptr);
return 0;
}
val *= unit;
}
if (val > 0 && (size_t)val > lower_bound) { if (val > 0 && (size_t)val > lower_bound) {
if (RTEST(ruby_verbose)) { if (RTEST(ruby_verbose)) {
fprintf(stderr, "%s=%"PRIdSIZE" (default value: %"PRIdSIZE")\n", name, val, *default_value); fprintf(stderr, "%s=%"PRIdSIZE" (default value: %"PRIdSIZE")\n", name, val, *default_value);