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garbage collect when open(2) fails with ENFILE or EMFILE

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2014-11-13 01:50:46 +09:00
parent 190264b3c8
commit b50093ad28
1 changed files with 11 additions and 1 deletions
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src/io.c
+11 -1
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@@ -374,7 +374,7 @@ mrb_io_s_sysopen(mrb_state *mrb, mrb_value klass)
mrb_value mode = mrb_nil_value();
mrb_int fd, flags, perm = -1;
const char *pat;
int modenum;
int modenum, retry = FALSE;
mrb_get_args(mrb, "S|Si", &path, &mode, &perm);
if (mrb_nil_p(mode)) {
@@ -388,8 +388,18 @@ mrb_io_s_sysopen(mrb_state *mrb, mrb_value klass)
flags = mrb_io_modestr_to_flags(mrb, mrb_string_value_cstr(mrb, &mode));
modenum = mrb_io_flags_to_modenum(mrb, flags);
reopen:
fd = open(pat, modenum, perm);
if (fd == -1) {
if (!retry) {
switch (errno) {
case ENFILE:
case EMFILE:
mrb_garbage_collect(mrb);
retry = TRUE;
goto reopen;
}
}
mrb_sys_fail(mrb, pat);
}