It is rather annoying that the other sizeof form doesn't work with Clang.
This at least gets things working (assuming you have __COUNTER__ support)
which most things we care about do at this point (including MSVC).
By design, it needs to be usable from multiple threads so they can each
request a thread-local mapped ring buffer. This becomes particularly
obvious if you want to send `sysprof_collector_mark()`s from two
libraries (say, GLib and libsoup); the first thread/library to call
`sysprof_collector_mark()` will win.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Rather than defining them piecemeal in each C and H file, and having
problems with headers being included in different orders so that
`_POSIX_C_SOURCE` gets a value which is too low, just define the feature
test flags in `meson.build`.
See `man 7 feature_test_macros`.
This is useful for when building sysprof as a subproject beneath a
project which doesn’t define these macros, or which targets an older C
standard than `gnu11`.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
These are just like `sysprof_collector_mark()`, but do the printf
formatting of the message internally, and only once the collector has
been fetched — so there is no overhead from the printf if sysprof is not
enabled at runtime.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
This is all aimed at making it so that sysprof can be built as a
subproject within GLib, with only `libsysprof-capture-4.a` being
produced as output.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
This will be used to build libsysprof-capture as a subproject within
libglib, with the symbols from libglib being left unresolved until the
static libsysprof-capture is linked into libglib.
When built as a subproject, libsysprof-capture won’t install anything.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
This is to avoid running `gdbus-codegen` when building sysprof as a
subproject underneath libglib, as by that point in the GLib build
process, `gdbus-codegen` is not yet available.
The interfaces generated by these `gdbus-codegen` invocations are only
needed for `sysprofd` and libsysprof, not for the libraries like
`libsysprof-capture`.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
This avoids making the project depend on all its dependencies, some of
which are optional, when being built as a Meson subproject.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
