Author: Simon Marchi
Author Date: 2019-08-20 01:51:06 UTC

Make bitfield.h C++-friendly

This patch changes bitfield.h to be usable in C++11.

It will probably never be compiled as C++ in the context of
lttng-ust, but this is just to keep things sync'ed across projects.

Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2019-08-02 14:43:35 UTC

Fix: don't wait for initial statedump when 0 session active

commit eb0e6022d5e2 "Fix: wait for initial statedump before proceeding
to the main program"

introduced a regression when an application interacts with a session
daemon which has 0 session active.

An application linked against lttng-ust started with
LTTNG_UST_REGISTER_TIMEOUT=-1 hangs forever.

Fix this by decrementing the semaphore if no statedump was requested
when the registration done command is received.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2019-08-02 14:43:35 UTC

Fix: don't wait for initial statedump when 0 session active

commit eb0e6022d5e2 "Fix: wait for initial statedump before proceeding
to the main program"

introduced a regression when an application interacts with a session
daemon which has 0 session active.

An application linked against lttng-ust started with
LTTNG_UST_REGISTER_TIMEOUT=-1 hangs forever.

Fix this by decrementing the semaphore if no statedump was requested
when the registration done command is received.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2019-08-02 14:43:35 UTC

Fix: don't wait for initial statedump when 0 session active

commit eb0e6022d5e2 "Fix: wait for initial statedump before proceeding
to the main program"

introduced a regression when an application interacts with a session
daemon which has 0 session active.

An application linked against lttng-ust started with
LTTNG_UST_REGISTER_TIMEOUT=-1 hangs forever.

Fix this by decrementing the semaphore if no statedump was requested
when the registration done command is received.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Jonathan Rajotte
Author Date: 2017-11-06 21:10:44 UTC

ABI: refuse non-matching ABI minor version on event registration

In scenarios where a lttng-tools 2.8 (lttng-ust 2.8) stack is running
and an application linked against a lttng-ust 2.7, event registration
will fail on fields size validation [1]. This is not expected based on
the ABI versioning exposed by lttng-ust 2.7 (6.0) and lttng-ust 2.8
(6.1).

The same happen if the scenario is reversed.

This is the result of a change in _ustctl_basic_type.

2.8 introduced enumeration to _ustctl_basic_type. The defined padding is
of 296 while the new union member is 312 (310 of real data + 2 for
alignment) pushing the structure size to 312 instead of the previous
296. This should have been an major ABI break but until now the problem
did not surface.

To prevent this, refuse non matching minor version. No need to check for
particular major,minor version since only 6.0 (ust 2.7) and 6.1 (ust
2.8) exist until a major ABI break.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Jonathan Rajotte
Author Date: 2017-11-06 21:10:44 UTC

ABI: refuse non-matching ABI minor version on event registration

In scenarios where a lttng-tools 2.8 (lttng-ust 2.8) stack is running
and an application linked against a lttng-ust 2.7, event registration
will fail on fields size validation [1]. This is not expected based on
the ABI versioning exposed by lttng-ust 2.7 (6.0) and lttng-ust 2.8
(6.1).

The same happen if the scenario is reversed.

This is the result of a change in _ustctl_basic_type.

2.8 introduced enumeration to _ustctl_basic_type. The defined padding is
of 296 while the new union member is 312 (310 of real data + 2 for
alignment) pushing the structure size to 312 instead of the previous
296. This should have been an major ABI break but until now the problem
did not surface.

To prevent this, refuse non matching minor version. No need to check for
particular major,minor version since only 6.0 (ust 2.7) and 6.1 (ust
2.8) exist until a major ABI break.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2016-05-20 21:49:06 UTC

Version 2.6.7

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2015-09-24 20:24:08 UTC

Version 2.5.7

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2015-01-26 20:21:13 UTC

Version 2.4.4

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2014-03-10 15:16:35 UTC

Fix: incorrect urcu git URL in README

Reported-by: Ruslan Uvashev <ruslan.uvashev@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2014-02-28 17:08:31 UTC

Version 2.2.3

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2014-02-05 00:38:19 UTC

Fix: liblttng-ust-fork Makefile flags mismatch

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2013-07-11 20:14:39 UTC

Version 2.0.8

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Christian Babeux
Author Date: 2012-12-21 18:38:22 UTC

Add a README.cygwin detailing Cygwin specific build/install instructions

Signed-off-by: Christian Babeux <christian.babeux@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Christian Babeux
Author Date: 2012-10-23 19:57:55 UTC

Fix: Fix self-assign warning on struct ustfork_clone_info init

Use the proper field designator syntax (C99) to initialize the
ustfork_clone_info struct.

Signed-off-by: Christian Babeux <christian.babeux@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

Author: Mathieu Desnoyers
Author Date: 2012-03-06 23:10:59 UTC

Merge branch 'master' into dev