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* include/qapi: add g_autoptr support for qobject typesMarc-André Lureau2022-04-061-0/+5
| | | | | | | | | | Need wrappers for qobject_unref() calls, which is a macro. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220323155743.1585078-10-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qobject: Make QString immutableMarkus Armbruster2020-12-191-63/+2Star
| | | | | | | | | The functions to modify a QString's string are all unused now. Drop them, and make the string immutable. Saves 16 bytes per QString on my system. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-21-armbru@redhat.com>
* qobject: Drop qstring_get_try_str()Markus Armbruster2020-12-191-10/+0Star
| | | | | | | | No users left outside tests/, and the ones in tests/ can just as well use qstring_get_str(). Do that, and drop the function. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-14-armbru@redhat.com>
* qobject: Drop qobject_get_try_str()Markus Armbruster2020-12-191-11/+0Star
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-13-armbru@redhat.com>
* qobject: Move internals to qobject-internal.hMarkus Armbruster2020-12-191-0/+1
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-9-armbru@redhat.com>
* Revert "qstring: add qstring_free()"Markus Armbruster2020-12-191-22/+5Star
| | | | | | | | | | This reverts commit 164c374b75f87c6765a705c4418ab7005a2d356f. A free function for a reference-counted object is in bad taste. Fortunately, this one is now also unused. Drop it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-7-armbru@redhat.com>
* qobject: Use GString instead of QString to accumulate JSONMarkus Armbruster2020-12-191-0/+19
| | | | | | | | | | | | | | QString supports modifying its string, but it's quite limited: you can only append. The remaining callers use it for building an initial string, never for modifying it later. Use of GString for building the initial string is actually more convenient here. Change qobject_to_json() & friends to do that. Once all such uses are replaced this way, QString can become immutable. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201211171152.146877-5-armbru@redhat.com>
* qstring: add qstring_free()Marc-André Lureau2020-01-241-5/+22
| | | | | | | | Similar to g_string_free(), optionally return the underlying char*. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200110153039.1379601-10-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qobject: Drop superfluous includes of qemu-common.hMarkus Armbruster2018-08-241-1/+0Star
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180823164025.12553-53-armbru@redhat.com>
* qstring: Move qstring_from_substr()'s @end one to the rightMarkus Armbruster2018-07-281-3/+3
| | | | | | | | | | | | | qstring_from_substr() takes the index of the substring's first and last character. qstring_from_substr(s, 0, SIZE_MAX) denotes an empty substring. Awkward. Shift the end index one to the right. This simplifies both qstring_from_substr() and its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180727062204.10401-3-armbru@redhat.com>
* qstring: Assert size calculations don't overflowMarkus Armbruster2018-07-281-1/+5
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180727062204.10401-2-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qstring: Fix qstring_from_substr() not to provoke int overflowliujunjie2018-07-281-1/+1
| | | | | | | | | | | | | | | | | | | qstring_from_substr() parameters @start and @end are of type int. blkdebug_parse_filename(), blkverify_parse_filename(), nbd_parse_uri(), and qstring_from_str() pass @end values of type size_t or ptrdiff_t. Values exceeding INT_MAX get truncated, with possibly disastrous results. Such huge substrings seem unlikely, but we found one in a core dump, where "info tlb" executed via QMP's human-monitor-command apparently produced 35 GiB of output. Fix by changing the parameters size_t. Signed-off-by: liujunjie <liujunjie23@huawei.com> Message-Id: <20180724134339.17832-1-liujunjie23@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qobject: introduce qobject_get_try_str()Peter Xu2018-03-191-0/+11
| | | | | | | | | | | | A quick way to fetch string from qobject when it's a QString. Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180309090006.10018-4-peterx@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: rebase to qobject_to() macro] Signed-off-by: Eric Blake <eblake@redhat.com>
* qobject: introduce qstring_get_try_str()Peter Xu2018-03-191-0/+10
| | | | | | | | | | | | | | The only difference from qstring_get_str() is that it allows the qstring to be NULL. If so, NULL is returned. CC: Eric Blake <eblake@redhat.com> CC: Markus Armbruster <armbru@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180309090006.10018-3-peterx@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: Remove qobject_to_X() functionsMax Reitz2018-03-191-11/+0Star
| | | | | | | | | | They are no longer needed now. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <20180224154033.29559-5-mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: Replace qobject_to_X(o) by qobject_to(X, o)Max Reitz2018-03-191-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch was generated using the following Coccinelle script: @@ expression Obj; @@ ( - qobject_to_qnum(Obj) + qobject_to(QNum, Obj) | - qobject_to_qstring(Obj) + qobject_to(QString, Obj) | - qobject_to_qdict(Obj) + qobject_to(QDict, Obj) | - qobject_to_qlist(Obj) + qobject_to(QList, Obj) | - qobject_to_qbool(Obj) + qobject_to(QBool, Obj) ) and a bit of manual fix-up for overly long lines and three places in tests/check-qjson.c that Coccinelle did not find. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <20180224154033.29559-4-mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: swap order from qobject_to(o, X), rebase to master, also a fix to latent false-positive compiler complaint about hw/i386/acpi-build.c] Signed-off-by: Eric Blake <eblake@redhat.com>
* Include qapi/qmp/qobject.h exactly where neededMarkus Armbruster2018-02-091-1/+0Star
| | | | | | | Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-11-armbru@redhat.com>
* qapi: Add qobject_is_equal()Max Reitz2017-11-171-0/+9
| | | | | | | | | | | | This generic function (along with its implementations for different types) determines whether two QObjects are equal. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 20171114180128.17076-4-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* qobject: Clean up includesPeter Maydell2016-02-041-0/+1
| | | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1454089805-5470-12-git-send-email-peter.maydell@linaro.org
* qobject: Simplify QObjectEric Blake2015-12-171-9/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The QObject hierarchy is small enough, and unlikely to grow further (since we only use it to map to JSON and already cover all JSON types), that we can simplify things by not tracking a separate vtable, but just inline the code element of the vtable QType directly into QObject (renamed to type), and track a separate array of destroy functions. We can drop qnull_destroy_obj() in the process. The remaining QObject subclasses must export their destructor. This also has the nice benefit of moving the typename 'QType' out of the way, so that the next patch can repurpose it for a nicer name for 'qtype_code'. The various objects are still the same size (so no change in cache line pressure), but now have less indirection (although I didn't bother benchmarking to see if there is a noticeable speedup, as we don't have hard evidence that this was in a performance hotspot in the first place). A future patch could drop the refcnt size to 32 bits for a smaller struct on 64-bit architectures, if desired (we have limits on the largest JSON that we are willing to parse, and will probably never need to take full advantage of a 64-bit refcnt). Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1449033659-25497-2-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qstring: Make conversion from QObject * accept nullMarkus Armbruster2015-10-291-2/+2
| | | | | | | | | | qobject_to_qstring() crashes on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-7-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
* qstring: add qstring_get_length()Luiz Capitulino2013-04-051-0/+8
| | | | | | | | Long overdue. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
* build: move qobject files to qobject/ and libqemuutil.aPaolo Bonzini2013-01-121-0/+141
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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