diff options
Diffstat (limited to 'erts/doc/src/erts_alloc.xml')
| -rw-r--r-- | erts/doc/src/erts_alloc.xml | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/erts/doc/src/erts_alloc.xml b/erts/doc/src/erts_alloc.xml index ce8d75f350..a094217959 100644 --- a/erts/doc/src/erts_alloc.xml +++ b/erts/doc/src/erts_alloc.xml @@ -4,7 +4,7 @@ <cref> <header> <copyright> - <year>2002</year><year>2017</year> + <year>2002</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -68,8 +68,7 @@ fixed size data types.</item> <tag><c>exec_alloc</c></tag> <item>Allocator used by the <seealso marker="hipe:HiPE_app"><c>HiPE</c></seealso> - application for native executable code on specific architectures - (x86_64).</item> + application for native executable code.</item> <tag><c>std_alloc</c></tag> <item>Allocator used for most memory blocks not allocated through any of the other allocators described above.</item> @@ -87,9 +86,9 @@ the number of system calls made.</item> </taglist> - <p><c>sys_alloc</c> and <c>literal_alloc</c> are always enabled and - cannot be disabled. <c>exec_alloc</c> is only available if it is needed - and cannot be disabled. <c>mseg_alloc</c> is always enabled if it is + <p><c>sys_alloc</c>, <c>literal_alloc</c> and <c>temp_alloc</c> are always + enabled and cannot be disabled. <c>exec_alloc</c> is only available if it + is needed and cannot be disabled. <c>mseg_alloc</c> is always enabled if it is available and an allocator that uses it is enabled. All other allocators can be <seealso marker="#M_e">enabled or disabled</seealso>. By default all allocators are enabled. @@ -560,6 +559,20 @@ than this threshold, otherwise the carrier is shrunk. See also <seealso marker="#M_rsbcst"><c>rsbcst</c></seealso>.</p> </item> + <tag><marker id="M_atags"/><c><![CDATA[+M<S>atags true|false]]></c></tag> + <item> + <p>Adds a small tag to each allocated block that contains basic + information about what it is and who allocated it. Use the + <seealso marker="tools:instrument"><c>instrument</c></seealso> + module to inspect this information.</p> + + <p>The runtime overhead is one word per allocation when enabled. This + may change at any time in the future.</p> + + <p>The default is <c>true</c> for <c>binary_alloc</c> and + <c>driver_alloc</c>, and <c>false</c> for the other allocator + types.</p> + </item> <tag><marker id="M_e"/><c><![CDATA[+M<S>e true|false]]></c></tag> <item> <p>Enables allocator <c><![CDATA[<S>]]></c>.</p> @@ -723,37 +736,14 @@ </section> <section> - <title>Special Flag for exec_alloc</title> - <taglist> - <tag><marker id="MXscs"/><c><![CDATA[+MXscs <size in MB>]]></c></tag> - <item> - <p><c>exec_alloc</c> super carrier size (in MB). The amount of - <em>virtual</em> address space reserved for native executable code - used by the <seealso marker="hipe:HiPE_app"><c>HiPE</c></seealso> application - on specific architectures (x86_64). Defaults to <c>512</c>.</p> - </item> - </taglist> - </section> - - <section> <title>Instrumentation Flags</title> <taglist> - <tag><marker id="Mim"/><c>+Mim true|false</c></tag> - <item> - <p>A map over current allocations is kept by the emulator. - The allocation map can be retrieved through module - <seealso marker="tools:instrument"> - <c>instrument(3)</c></seealso>. <c>+Mim true</c> - implies <c>+Mis true</c>. <c>+Mim true</c> is the same as flag - <seealso marker="erl#instr"><c>-instr</c></seealso> in - <c>erl(1)</c>.</p> - </item> - <tag><marker id="Mis"/><c>+Mis true|false</c></tag> - <item> - <p>Status over allocated memory is kept by the emulator. - The allocation status can be retrieved through module - <seealso marker="tools:instrument"> - <c>instrument(3)</c></seealso>.</p> + <tag><c>+M<S>atags</c></tag> + <item> + <p>Adds a small tag to each allocated block that contains basic + information about what it is and who allocated it. See + <seealso marker="#M_atags"><c>+M<S>atags</c></seealso> for a + more complete description.</p> </item> <tag><marker id="Mit"/><c>+Mit X</c></tag> <item> |