Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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44 lines
1.1 KiB
44 lines
1.1 KiB
13 years ago
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/*
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* upb - a minimalist implementation of protocol buffers.
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*
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* Copyright (c) 2009 Google Inc. See LICENSE for details.
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* Author: Josh Haberman <jhaberman@gmail.com>
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*
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* Handling of errno.
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*/
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#include "upb/stdc/error.h"
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#include <string.h>
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void upb_status_fromerrno(upb_status *status, int code) {
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if (code != 0 && !upb_errno_is_wouldblock(code)) {
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status->error = true;
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upb_status_setcode(status, &upb_stdc_errorspace, code);
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}
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}
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bool upb_errno_is_wouldblock(int code) {
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return
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#ifdef EAGAIN
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code == EAGAIN ||
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#endif
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#ifdef EWOULDBLOCK
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code == EWOULDBLOCK ||
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#endif
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false;
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}
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bool upb_stdc_codetostr(int code, char *buf, size_t len) {
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// strerror() may use static buffers and is not guaranteed to be thread-safe,
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// but it appears that it is not subject to buffer overflows in practice, and
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// it used by other portable and high-quality software like Lua. For more
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// discussion see: http://thread.gmane.org/gmane.comp.lang.lua.general/89506
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char *err = strerror(code);
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if (strlen(err) >= len) return false;
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strcpy(buf, err);
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return true;
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}
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upb_errorspace upb_stdc_errorspace = {"stdc", &upb_stdc_codetostr};
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