diff options
Diffstat (limited to 'erts/doc')
| -rw-r--r-- | erts/doc/src/erl.xml | 50 | ||||
| -rw-r--r-- | erts/doc/src/erl_driver.xml | 61 | ||||
| -rw-r--r-- | erts/doc/src/erlang.xml | 2 | ||||
| -rw-r--r-- | erts/doc/src/erts_alloc.xml | 16 | ||||
| -rw-r--r-- | erts/doc/src/tty.xml | 26 |
5 files changed, 117 insertions, 38 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 70569b1c6c..c16b45856d 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -748,19 +748,47 @@ </item> <tag><marker id="+S"><c><![CDATA[+S Schedulers:SchedulerOnline]]></c></marker></tag> <item> - <p>Sets the amount of scheduler threads to create and scheduler - threads to set online when SMP support has been enabled. - Valid range for both values are 1-1024. If the - Erlang runtime system is able to determine the amount - of logical processors configured and logical processors available, - <c>Schedulers</c> will default to logical processors configured, - and <c>SchedulersOnline</c> will default to logical processors - available; otherwise, the default values will be 1. <c>Schedulers</c> - may be omitted if <c>:SchedulerOnline</c> is not and vice versa. The - amount of schedulers online can be changed at run time via + <p>Sets the number of scheduler threads to create and scheduler + threads to set online when SMP support has been enabled. The maximum for + both values is 1024. If the Erlang runtime system is able to determine the + amount of logical processors configured and logical processors available, + <c>Schedulers</c> will default to logical processors configured, and + <c>SchedulersOnline</c> will default to logical processors available; + otherwise, the default values will be 1. <c>Schedulers</c> may be omitted + if <c>:SchedulerOnline</c> is not and vice versa. The number of schedulers + online can be changed at run time via <seealso marker="erlang#system_flag_schedulers_online">erlang:system_flag(schedulers_online, SchedulersOnline)</seealso>. </p> - <p>This flag will be ignored if the emulator doesn't have + <p>If <c>Schedulers</c> or <c>SchedulersOnline</c> is specified as a + negative number, the value is subtracted from the default number of + logical processors configured or logical processors available, respectively. + </p> + <p>Specifying the value 0 for <c>Schedulers</c> or <c>SchedulersOnline</c> + resets the number of scheduler threads or scheduler threads online respectively + to its default value. + </p> + <p>This option is ignored if the emulator doesn't have + SMP support enabled (see the <seealso marker="#smp">-smp</seealso> + flag).</p> + </item> + <tag><marker id="+SP"><c><![CDATA[+SP SchedulersPercentage:SchedulersOnlinePercentage]]></c></marker></tag> + <item> + <p>Similar to <seealso marker="#+S">+S</seealso> but uses percentages to set the + number of scheduler threads to create, based on logical processors configured, + and scheduler threads to set online, based on logical processors available, when + SMP support has been enabled. Specified values must be greater than 0. For example, + <c>+SP 50:25</c> sets the number of scheduler threads to 50% of the logical processors + configured and the number of scheduler threads online to 25% of the logical processors available. + <c>SchedulersPercentage</c> may be omitted if <c>:SchedulersOnlinePercentage</c> is + not and vice versa. The number of schedulers online can be changed at run time via + <seealso marker="erlang#system_flag_schedulers_online">erlang:system_flag(schedulers_online, SchedulersOnline)</seealso>. + </p> + <p>This option interacts with <seealso marker="#+S">+S</seealso> settings. + For example, on a system with 8 logical cores configured and 8 logical cores + available, the combination of the options <c>+S 4:4 +SP 50:25</c> (in either order) + results in 2 scheduler threads (50% of 4) and 1 scheduler thread online (25% of 4). + </p> + <p>This option is ignored if the emulator doesn't have SMP support enabled (see the <seealso marker="#smp">-smp</seealso> flag).</p> </item> diff --git a/erts/doc/src/erl_driver.xml b/erts/doc/src/erl_driver.xml index efe0483b31..540390e1b1 100644 --- a/erts/doc/src/erl_driver.xml +++ b/erts/doc/src/erl_driver.xml @@ -666,7 +666,7 @@ typedef struct ErlDrvBinary { <item> <p>The <c>ErlDrvData</c> is a handle to driver-specific data, passed to the driver call-backs. It is a pointer, and is - most often type casted to a specific pointer in the driver.</p> + most often type cast to a specific pointer in the driver.</p> </item> <tag>SysIOVec</tag> <item> @@ -1014,7 +1014,7 @@ typedef struct ErlIOVec { <fsummary>Read a system timestamp</fsummary> <desc> <marker id="driver_get_now"></marker> - <p>This function reads a timestamp into the memory pointed to by + <p>This function reads a timestamp into the memory pointed to by the parameter <c>now</c>. See the description of <seealso marker="#ErlDrvNowData">ErlDrvNowData</seealso> for specification of its fields. </p> <p>The return value is 0 unless the <c>now</c> pointer is not @@ -1056,7 +1056,7 @@ typedef struct ErlIOVec { returned. Another thread may still be using the event object internally. To safely close an event object call <c>driver_select</c> with <c>ERL_DRV_USE</c> and <c>on==0</c>. That - will clear all events and then call + will clear all events and then call <seealso marker="driver_entry#stop_select">stop_select</seealso> when it is safe to close the event object. <c>ERL_DRV_USE</c> should be set together with the first event @@ -1068,7 +1068,7 @@ typedef struct ErlIOVec { <p>ERL_DRV_USE was added in OTP release R13. Old drivers will still work as before. But it is recommended to update them to use <c>ERL_DRV_USE</c> and <c>stop_select</c> to make sure that event objects are closed in a safe way.</p> - </note> + </note> <p>The return value is 0 (failure, -1, only if the <c>ready_input</c>/<c>ready_output</c> is <c>NULL</c>).</p> @@ -1524,7 +1524,7 @@ typedef struct ErlIOVec { <marker id="remove_driver_entry"></marker> <p>This function removes a driver entry <c>de</c> previously added with <c>add_driver_entry</c>.</p> - <p>Driver entries added by the <c>erl_ddll</c> erlang interface can + <p>Driver entries added by the <c>erl_ddll</c> erlang interface can not be removed by using this interface.</p> </desc> </func> @@ -1758,7 +1758,7 @@ typedef struct ErlIOVec { <pre> Term type Argument(s) =========================================== -ERL_DRV_NIL +ERL_DRV_NIL ERL_DRV_ATOM ErlDrvTermData atom (from driver_mk_atom(char *string)) ERL_DRV_INT ErlDrvSInt integer ERL_DRV_UINT ErlDrvUInt integer @@ -1779,11 +1779,11 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len signed integer data type <c>ErlDrvSInt</c> are 64 bits wide on a 64 bit runtime system and 32 bits wide on a 32 bit runtime system. They were introduced in erts version 5.6, - and replaced some of the <c>int</c> arguments in the list above. + and replaced some of the <c>int</c> arguments in the list above. </p> <p>The unsigned integer data type <c>ErlDrvUInt64</c> and the signed integer data type <c>ErlDrvSInt64</c> are always 64 bits - wide. They were introduced in erts version 5.7.4. + wide. They were introduced in erts version 5.7.4. </p> <p>To build the tuple <c>{tcp, Port, [100 | Binary]}</c>, the @@ -1879,7 +1879,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <fsummary>Send term data from driver to port owner</fsummary> <desc> <marker id="driver_output_term"></marker> - <warning><p><c>driver_output_term()</c> is deferred and will + <warning><p><c>driver_output_term()</c> is deprecated and will be removed in the OTP-R17 release. Use <seealso marker="#erl_drv_send_term">erl_drv_output_term()</seealso> instead.</p> @@ -1937,7 +1937,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <fsummary>Send term data to other process than port owner process</fsummary> <desc> <marker id="driver_send_term"></marker> - <warning><p><c>driver_send_term()</c> is deferred and will + <warning><p><c>driver_send_term()</c> is deprecated and will be removed in the OTP-R17 release. Use <seealso marker="#erl_drv_send_term">erl_drv_send_term()</seealso> instead.</p> @@ -1981,7 +1981,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len thread, the following call can be used:</p> <p></p> <code type="none"><![CDATA[ - unsigned int myKey = (unsigned int) myPort; + unsigned int myKey = driver_async_port_key(myPort); r = driver_async(myPort, &myKey, myData, myFunc); ]]></code> @@ -1998,7 +1998,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len The data should be freed in <c>async_free</c>, because it's called if <c>driver_async_cancel</c> is called.</p> <p>When the async operation is done, <seealso marker="driver_entry#ready_async">ready_async</seealso> driver - entry function is called. If <c>async_ready</c> is null in + entry function is called. If <c>ready_async</c> is null in the driver entry, the <c>async_free</c> function is called instead.</p> <p>The return value is a handle to the asynchronous task, which @@ -2022,6 +2022,24 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len </desc> </func> <func> + <name><ret>unsigned int</ret><nametext>driver_async_port_key (ErlDrvPort port)</nametext></name> + <fsummary>Calculate an async key from an ErlDrvPort</fsummary> + <desc> + <marker id="driver_async_port_key"></marker> + <p>This function calculates a key for later use in <seealso + marker="#driver_async">driver_async()</seealso>. The keys are + evenly distributed so that a fair mapping between port id's + and async thread id's is achieved.</p> + <note> + <p>Before OTP-R16, the actual port id could be used as a key + with proper casting, but after the rewrite of the port + subsystem, this is no longer the case. With this function, you + can achieve the same distribution based on port id's as before + OTP-R16.</p> + </note> + </desc> + </func> + <func> <name><ret>int</ret><nametext>driver_async_cancel(long id)</nametext></name> <fsummary>Cancel an asynchronous call</fsummary> <desc> @@ -2033,10 +2051,10 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len The user had to implement synchronization of cancellation anyway. It also unnecessarily complicated the implementation. Therefore, as of OTP-R15B <c>driver_async_cancel()</c> is deprecated, and - scheduled for removal in OTP-R16. It will currently always fail, + scheduled for removal in OTP-R17. It will currently always fail, and return 0.</p> - <warning><p><c>driver_async_cancel()</c> is deferred and will - be removed in the OTP-R16 release.</p> + <warning><p><c>driver_async_cancel()</c> is deprecated and will + be removed in the OTP-R17 release.</p> </warning> </desc> @@ -2048,7 +2066,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <marker id="driver_lock_driver"></marker> <p>This function locks the driver used by the port <c>port</c> in memory for the rest of the emulator process' - lifetime. After this call, the driver behaves as one of Erlang's + lifetime. After this call, the driver behaves as one of Erlang's statically linked in drivers.</p> </desc> </func> @@ -2076,7 +2094,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <seealso marker="driver_entry">driver_entry</seealso>).</item> <tag><c>drv_data</c></tag> <item>The driver defined handle that will be passed in subsequent - calls to driver call-backs. Note, that the + calls to driver call-backs. Note, that the <seealso marker="driver_entry#start">driver start call-back</seealso> will not be called for this new driver instance. The driver defined handle is normally created in the @@ -2284,7 +2302,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <item>A thread identifier.</item> </taglist> <p>This function compares two thread identifiers for equality, - and returns <c>0</c> it they aren't equal, and + and returns <c>0</c> it they aren't equal, and a value not equal to <c>0</c> if they are equal.</p> <note><p>A Thread identifier may be reused very quickly after a thread has terminated. Therefore, if a thread @@ -2469,7 +2487,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len </taglist> <p>This function broadcasts on a condition variable. That is, if other threads are waiting on the condition variable being - broadcasted on, <em>all</em> of them will be woken. + broadcast on, <em>all</em> of them will be woken. </p> <p>This function is thread-safe.</p> </desc> @@ -2498,7 +2516,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len the calling thread when calling this function. </p> <note><p><c>erl_drv_cond_wait()</c> might return even though - no-one has signaled or broadcasted on the condition + no-one has signaled or broadcast on the condition variable. Code calling <c>erl_drv_cond_wait()</c> should always be prepared for <c>erl_drv_cond_wait()</c> returning even though the condition that the thread was @@ -2822,7 +2840,7 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len <item>A pointer to an output buffer.</item> <tag><c>value_size</c></tag> <item>A pointer to an integer. The integer is both used for - passing input and output sizes (see below). + passing input and output sizes (see below). </item> </taglist> <p>This function retrieves the value of an environment variable. @@ -2900,4 +2918,3 @@ ERL_DRV_EXT2TERM char *buf, ErlDrvUInt len Guide Ch. 3)</p> </section> </cref> - diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 767edc1cc0..5ee40823bc 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -235,7 +235,7 @@ <code> 1> Bin = <<1,2,3,4,5,6,7,8,9,10>>. -2> binary_part(Bin,{byte_size(Bin), -5)). +2> binary_part(Bin,{byte_size(Bin), -5}). <<6,7,8,9,10>> </code> diff --git a/erts/doc/src/erts_alloc.xml b/erts/doc/src/erts_alloc.xml index 2ffb55c6ab..6ce2261430 100644 --- a/erts/doc/src/erts_alloc.xml +++ b/erts/doc/src/erts_alloc.xml @@ -170,6 +170,15 @@ used. The time complexity is proportional to log N, where N is the number of free blocks.</p> </item> + <tag>Address order first fit carrier best fit</tag> + <item> + <p>Strategy: Find the <em>carrier</em> with the lowest address that + can satisfy the requested block size, then find a block within + that carrier using the "best fit" strategy.</p> + <p>Implementation: Balanced binary search trees are + used. The time complexity is proportional to log N, where + N is the number of free blocks.</p> + </item> <tag>Address order first fit carrier address order best fit</tag> <item> <p>Strategy: Find the <em>carrier</em> with the lowest address that @@ -330,20 +339,21 @@ fetched it will function as an ordinary carrier. This feature has special requirements on the <seealso marker="#M_as">allocation strategy</seealso> used. Currently - only the <c>aoff</c> and the <c>aoffcaobf</c> strategies support + only the strategies <c>aoff</c>, <c>aoffcbf</c> and <c>aoffcaobf</c> support abandoned carriers. This feature also requires <seealso marker="#M_t">multiple thread specific instances</seealso> to be enabled. When enabling this feature, multiple thread specific instances will be enabled if not already enabled, and the - <c>aoffcaobf</c> strategy will be enabled if current strategy does not + <c>aoffcbf</c> strategy will be enabled if current strategy does not support abandoned carriers. This feature can be enabled on all allocators based on the <c>alloc_util</c> framework with the exception of <c>temp_alloc</c> (which would be pointless). </item> - <tag><marker id="M_as"><c><![CDATA[+M<S>as bf|aobf|aoff|aoffcaobf|gf|af]]></c></marker></tag> + <tag><marker id="M_as"><c><![CDATA[+M<S>as bf|aobf|aoff|aoffcbf|aoffcaobf|gf|af]]></c></marker></tag> <item> Allocation strategy. Valid strategies are <c>bf</c> (best fit), <c>aobf</c> (address order best fit), <c>aoff</c> (address order first fit), + <c>aoffcbf</c> (address order first fit carrier best fit), <c>aoffcaobf</c> (address order first fit carrier address order best fit), <c>gf</c> (good fit), and <c>af</c> (a fit). See <seealso marker="#strategy">the description of allocation strategies</seealso> in "the <c>alloc_util</c> framework" section.</item> diff --git a/erts/doc/src/tty.xml b/erts/doc/src/tty.xml index 7d662a2849..b16523e085 100644 --- a/erts/doc/src/tty.xml +++ b/erts/doc/src/tty.xml @@ -47,7 +47,7 @@ <section> <title>Normal Mode</title> <p>In normal mode keystrokes from the user are collected and interpreted by <c><![CDATA[tty]]></c>. Most of the <em>emacs</em> line editing commands are supported. The following is a complete list of the supported line editing commands.<br></br></p> - <p><em>Note:</em> The notation <c><![CDATA[C-a]]></c> means pressing the control key and the letter <c><![CDATA[a]]></c> simultaneously. <c><![CDATA[M-f]]></c> means pressing the <c><![CDATA[ESC]]></c> key followed by the letter <c><![CDATA[f]]></c>. + <p><em>Note:</em> The notation <c><![CDATA[C-a]]></c> means pressing the control key and the letter <c><![CDATA[a]]></c> simultaneously. <c><![CDATA[M-f]]></c> means pressing the <c><![CDATA[ESC]]></c> key followed by the letter <c><![CDATA[f]]></c>. <c><![CDATA[Home]]></c> and <c><![CDATA[End]]></c> represent the keys with the same name on the keyboard, whereas <c><![CDATA[Left]]></c> and <c><![CDATA[Right]]></c> represent the corresponding arrow keys. </p> <table> <row> @@ -55,6 +55,10 @@ <cell align="left" valign="middle"><em>Function</em></cell> </row> <row> + <cell align="left" valign="middle">Home</cell> + <cell align="left" valign="middle">Beginning of line</cell> + </row> + <row> <cell align="left" valign="middle">C-a</cell> <cell align="left" valign="middle">Beginning of line</cell> </row> @@ -63,6 +67,10 @@ <cell align="left" valign="middle">Backward character</cell> </row> <row> + <cell align="left" valign="middle">C-Left</cell> + <cell align="left" valign="middle">Backward word</cell> + </row> + <row> <cell align="left" valign="middle">M-b</cell> <cell align="left" valign="middle">Backward word</cell> </row> @@ -75,6 +83,10 @@ <cell align="left" valign="middle">Delete word</cell> </row> <row> + <cell align="left" valign="middle">End</cell> + <cell align="left" valign="middle">End of line</cell> + </row> + <row> <cell align="left" valign="middle">C-e</cell> <cell align="left" valign="middle">End of line</cell> </row> @@ -83,6 +95,10 @@ <cell align="left" valign="middle">Forward character</cell> </row> <row> + <cell align="left" valign="middle">C-Right</cell> + <cell align="left" valign="middle">Forward word</cell> + </row> + <row> <cell align="left" valign="middle">M-f</cell> <cell align="left" valign="middle">Forward word</cell> </row> @@ -95,6 +111,10 @@ <cell align="left" valign="middle">Kill line</cell> </row> <row> + <cell align="left" valign="middle">C-u</cell> + <cell align="left" valign="middle">Backward kill line</cell> + </row> + <row> <cell align="left" valign="middle">C-l</cell> <cell align="left" valign="middle">Redraw line</cell> </row> @@ -111,6 +131,10 @@ <cell align="left" valign="middle">Transpose characters</cell> </row> <row> + <cell align="left" valign="middle">C-w</cell> + <cell align="left" valign="middle">Backward kill word</cell> + </row> + <row> <cell align="left" valign="middle">C-y</cell> <cell align="left" valign="middle">Insert previously killed text</cell> </row> |