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libzmq/doc/zmq_atomic_counter_dec.adoc

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Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
= zmq_atomic_counter_dec(3)
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== NAME
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
zmq_atomic_counter_dec - decrement an atomic counter
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== SYNOPSIS
Problem: 'bool' is not defined by default zmq_atomic_counter_dec returned a 'bool' value, yet this isn't defined by standard, so causes compile errors in upstream code. Solution: return an int that can be safely converted to bool if needed by bindings.
2014-12-23 15:20:10 +01:00
*int zmq_atomic_counter_dec (void *counter);*
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== DESCRIPTION
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
The _zmq_atomic_counter_dec_ function decrements an atomic counter in
a threadsafe fashion. This function uses platform specific atomic
operations.
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== RETURN VALUE
Problem: 'bool' is not defined by default zmq_atomic_counter_dec returned a 'bool' value, yet this isn't defined by standard, so causes compile errors in upstream code. Solution: return an int that can be safely converted to bool if needed by bindings.
2014-12-23 15:20:10 +01:00
The _zmq_atomic_counter_dec()_ function returns 1 if the counter is
greater than zero after decrementing, or zero if the counter reached
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
zero.
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== EXAMPLE
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
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.Test code for atomic counters
----
void *counter = zmq_atomic_counter_new ();
assert (zmq_atomic_counter_value (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 1);
assert (zmq_atomic_counter_inc (counter) == 2);
assert (zmq_atomic_counter_value (counter) == 3);
Problem: 'bool' is not defined by default zmq_atomic_counter_dec returned a 'bool' value, yet this isn't defined by standard, so causes compile errors in upstream code. Solution: return an int that can be safely converted to bool if needed by bindings.
2014-12-23 15:20:10 +01:00
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
zmq_atomic_counter_set (counter, 2);
Problem: 'bool' is not defined by default zmq_atomic_counter_dec returned a 'bool' value, yet this isn't defined by standard, so causes compile errors in upstream code. Solution: return an int that can be safely converted to bool if needed by bindings.
2014-12-23 15:20:10 +01:00
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
zmq_atomic_counter_destroy (&counter);
Problem: 'bool' is not defined by default zmq_atomic_counter_dec returned a 'bool' value, yet this isn't defined by standard, so causes compile errors in upstream code. Solution: return an int that can be safely converted to bool if needed by bindings.
2014-12-23 15:20:10 +01:00
return 0;
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
----
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== SEE ALSO
xref:zmq_atomic_counter_new.adoc[zmq_atomic_counter_new]
xref:zmq_atomic_counter_set.adoc[zmq_atomic_counter_set]
xref:zmq_atomic_counter_inc.adoc[zmq_atomic_counter_inc]
xref:zmq_atomic_counter_value.adoc[zmq_atomic_counter_value]
xref:zmq_atomic_counter_destroy.adoc[zmq_atomic_counter_destroy]
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
Feature: modernize API documentation * migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator * migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles) * remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that * add HTML output support to the doc/Makefile by using asciidoctor * change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc) * remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages * add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors * removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-21 01:50:38 +02:00
== AUTHORS
Problem: need atomic reference counting in several projects Solution: as libzmq already provides this across all platforms, expose an atomic counter API. I've not wrapped atomic pointers, though someone who needs this may want to do so.
2014-12-23 01:14:38 +01:00
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read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.
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