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Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-02-09' into staging

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Error reporting patches for 2016-02-09

# gpg: Signature made Tue 09 Feb 2016 12:38:33 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-error-2016-02-09:
  HACKING: Add a section on error handling and reporting
  error: Improve documentation some more
  Use error_fatal to simplify obvious fatal errors (again)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2016-02-09 16:09:15 +00:00
parent 2f71f79ccd d76a3bf5c4
commit 84c0781103
7 changed files with 71 additions and 34 deletions
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15
include/qapi/error.h
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@ -27,11 +27,11 @@
* error_setg(&err, "invalid quark\n"
* "Valid quarks are up, down, strange, charm, top, bottom.");
*
* Report an error to stderr:
* Report an error to the current monitor if we have one, else stderr:
* error_report_err(err);
* This frees the error object.
*
* Report an error to stderr with additional text prepended:
* Likewise, but with additional text prepended:
* error_reportf_err(err, "Could not frobnicate '%s': ", name);
*
* Report an error somewhere else:
@ -162,6 +162,9 @@ ErrorClass error_get_class(const Error *err);
* human-readable error message is made from printf-style @fmt, ...
* The resulting message should be a single phrase, with no newline or
* trailing punctuation.
* Please don't error_setg(&error_fatal, ...), use error_report() and
* exit(), because that's more obvious.
* Likewise, don't error_setg(&error_abort, ...), use assert().
*/
#define error_setg(errp, fmt, ...) \
error_setg_internal((errp), __FILE__, __LINE__, __func__, \
@ -213,6 +216,8 @@ void error_setg_win32_internal(Error **errp,
* the error object.
* Else, move the error object from @local_err to *@dst_errp.
* On return, @local_err is invalid.
* Please don't error_propagate(&error_fatal, ...), use
* error_report_err() and exit(), because that's more obvious.
*/
void error_propagate(Error **dst_errp, Error *local_err);
@ -291,12 +296,14 @@ void error_set_internal(Error **errp,
GCC_FMT_ATTR(6, 7);
/*
* Pass to error_setg() & friends to abort() on error.
* Special error destination to abort on error.
* See error_setg() and error_propagate() for details.
*/
extern Error *error_abort;
/*
* Pass to error_setg() & friends to exit(1) on error.
* Special error destination to exit(1) on error.
* See error_setg() and error_propagate() for details.
*/
extern Error *error_fatal;