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authorLukas Larsson <[email protected]>2015-12-10 10:58:33 +0100
committerLukas Larsson <[email protected]>2016-03-29 14:56:35 +0200
commit4a736966eba5398a22697db6ca67e1e3dd3cd0f2 (patch)
treefd94b504ca0f28abdebcedeea72018610a561a00 /erts/doc/src
parentcee5b753e8dbd294b2677f684c404d16dcfcd643 (diff)
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erts: Add enif_cpu/now_time and enif_make_unique_integer
Diffstat (limited to 'erts/doc/src')
-rw-r--r--erts/doc/src/erl_nif.xml201
1 files changed, 127 insertions, 74 deletions
diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml
index be0e406b9c..e62f5792a5 100644
--- a/erts/doc/src/erl_nif.xml
+++ b/erts/doc/src/erl_nif.xml
@@ -591,6 +591,21 @@ typedef enum {
</taglist>
</item>
+ <tag><marker id="ErlNifUniqueInteger"/>ErlNifUniqueInteger</tag>
+ <item>
+ <p>An enumeration of the properties that can be requested from
+ <seealso marker="#enif_unique_integer">
+ enif_unique_integer</seealso>.</p>
+ <taglist>
+ <tag><c>ERL_NIF_UNIQUE_POSITIVE</c></tag>
+ <item><p>A positive integer</p></item>
+ <tag><c>ERL_NIF_UNIQUE_MONOTONIC</c></tag>
+ <item><p>A
+ <seealso marker="time_correction#Strictly_Monotonically_Increasing">strictly
+ monotonically increasing</seealso> integer corresponding to creation time</p></item>
+ </taglist>
+ </item>
+
</taglist>
</section>
@@ -689,7 +704,49 @@ typedef enum {
a number of repeated NIF-calls without the need to create threads.
See also the <seealso marker="#WARNING">warning</seealso> text at the beginning of this document.</p>
</desc>
+
+ </func>
+
+ <func>
+ <name><ret>ErlNifTime</ret><nametext>enif_convert_time_unit(ErlNifTime val, ErlNifTimeUnit from, ErlNifTimeUnit to)</nametext></name>
+ <fsummary>Convert time unit of a time value</fsummary>
+ <desc>
+ <marker id="enif_convert_time_unit"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>val</c></tag>
+ <item>Value to convert time unit for.</item>
+ <tag><c>from</c></tag>
+ <item>Time unit of <c>val</c>.</item>
+ <tag><c>to</c></tag>
+ <item>Time unit of returned value.</item>
+ </taglist>
+ <p>Converts the <c>val</c> value of time unit <c>from</c> to
+ the corresponding value of time unit <c>to</c>. The result is
+ rounded using the floor function.</p>
+ <p>Returns <c>ERL_NIF_TIME_ERROR</c> if called with an invalid
+ time unit argument.</p>
+ <p>See also:</p>
+ <list>
+ <item><seealso marker="#ErlNifTime"><c>ErlNifTime</c></seealso></item>
+ <item><seealso marker="#ErlNifTimeUnit"><c>ErlNifTimeUnit</c></seealso></item>
+ </list>
+ </desc>
</func>
+
+ <func>
+ <name><ret>ERL_NIF_TERM</ret><nametext>enif_cpu_time(ErlNifEnv *)</nametext></name>
+ <fsummary></fsummary>
+ <desc>
+ <p>Returns the CPU time in the same format as <seealso marker="erlang#timestamp-0">erlang:timestamp()</seealso>.
+ The CPU time is the time the current logical cpu has spent executing since
+ some arbitrary point in the past.
+ If the OS does not support fetching of this value <c>enif_cpu_time</c>
+ invokes <seealso marker="#enif_make_badarg">enif_make_badarg</seealso>.
+ </p>
+ </desc>
+ </func>
+
<func><name><ret>int</ret><nametext>enif_equal_tids(ErlNifTid tid1, ErlNifTid tid2)</nametext></name>
<fsummary></fsummary>
<desc><p>Same as <seealso marker="erl_driver#erl_drv_equal_tids">erl_drv_equal_tids</seealso>.
@@ -1195,6 +1252,24 @@ typedef enum {
<fsummary>Create an unsigned integer term</fsummary>
<desc><p>Create an integer term from an unsigned 64-bit integer.</p></desc>
</func>
+ <func>
+ <name><ret>ERL_NIF_TERM</ret><nametext>enif_make_unique_integer(ErlNifEnv *env, ErlNifUniqueInteger properties)</nametext></name>
+ <fsummary></fsummary>
+ <desc>
+ <p>Returns a unique integer with the same properties as given by <seealso marker="erlang#unique_integer-1">erlang:unique_integer/1</seealso>.</p>
+ <p><c>env</c> is the environment to create the integer in.</p>
+ <p>
+ <c>ERL_NIF_UNIQUE_POSITIVE</c> and <c>ERL_NIF_UNIQUE_MONOTONIC</c> can
+ be passed as the second argument to change the properties of the
+ integer returned. It is possible to combine them by or:ing the
+ two values together.
+ </p>
+ <p>See also:</p>
+ <list>
+ <item><seealso marker="#ErlNifUniqueInteger"><c>ErlNifUniqueInteger</c></seealso></item>
+ </list>
+ </desc>
+ </func>
<func><name><ret>ERL_NIF_TERM</ret><nametext>enif_make_ulong(ErlNifEnv* env, unsigned long i)</nametext></name>
<fsummary>Create an integer term from an unsigned long int</fsummary>
<desc><p>Create an integer term from an <c>unsigned long int</c>.</p></desc>
@@ -1265,6 +1340,34 @@ enif_map_iterator_destroy(env, &amp;iter);
or false if the iterator is positioned at the head (before the first
entry).</p></desc>
</func>
+
+ <func>
+ <name><ret>ErlNifTime</ret><nametext>enif_monotonic_time(ErlNifTimeUnit time_unit)</nametext></name>
+ <fsummary>Get Erlang Monotonic Time</fsummary>
+ <desc>
+ <marker id="enif_monotonic_time"></marker>
+ <p>Arguments:</p>
+ <taglist>
+ <tag><c>time_unit</c></tag>
+ <item>Time unit of returned value.</item>
+ </taglist>
+ <p>
+ Returns
+ <seealso marker="time_correction#Erlang_Monotonic_Time">Erlang
+ monotonic time</seealso>. Note that it is not uncommon with
+ negative values.
+ </p>
+ <p>Returns <c>ERL_NIF_TIME_ERROR</c> if called with an invalid
+ time unit argument, or if called from a thread that is not a
+ scheduler thread.</p>
+ <p>See also:</p>
+ <list>
+ <item><seealso marker="#ErlNifTime"><c>ErlNifTime</c></seealso></item>
+ <item><seealso marker="#ErlNifTimeUnit"><c>ErlNifTimeUnit</c></seealso></item>
+ </list>
+ </desc>
+ </func>
+
<func><name><ret>ErlNifMutex *</ret><nametext>enif_mutex_create(char *name)</nametext></name>
<fsummary></fsummary>
<desc><p>Same as <seealso marker="erl_driver#erl_drv_mutex_create">erl_drv_mutex_create</seealso>.
@@ -1290,6 +1393,11 @@ enif_map_iterator_destroy(env, &amp;iter);
<desc><p>Same as <seealso marker="erl_driver#erl_drv_mutex_unlock">erl_drv_mutex_unlock</seealso>.
</p></desc>
</func>
+ <func><name><ret>ERL_NIF_TERM</ret><nametext>enif_now_time(ErlNifEnv *env)</nametext></name>
+ <fsummary></fsummary>
+ <desc><p>Retuns an <seealso marker="erlang#now-0">erlang:now()</seealso> timestamp.
+ The enif_now_time function is <em>deprecated</em>.</p></desc>
+ </func>
<func><name><ret>ErlNifResourceType *</ret><nametext>enif_open_resource_type(ErlNifEnv* env,
const char* module_str, const char* name,
ErlNifResourceDtor* dtor, ErlNifResourceFlags flags, ErlNifResourceFlags* tried)</nametext></name>
@@ -1496,54 +1604,6 @@ enif_map_iterator_destroy(env, &amp;iter);
<desc><p>Same as <seealso marker="erl_driver#erl_drv_thread_self">erl_drv_thread_self</seealso>.
</p></desc>
</func>
- <func><name><ret>int</ret><nametext>enif_tsd_key_create(char *name, ErlNifTSDKey *key)</nametext></name>
- <fsummary></fsummary>
- <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_key_create">erl_drv_tsd_key_create</seealso>.
- </p></desc>
- </func>
- <func><name><ret>void</ret><nametext>enif_tsd_key_destroy(ErlNifTSDKey key)</nametext></name>
- <fsummary></fsummary>
- <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_key_destroy">erl_drv_tsd_key_destroy</seealso>.
- </p></desc>
- </func>
- <func><name><ret>void *</ret><nametext>enif_tsd_get(ErlNifTSDKey key)</nametext></name>
- <fsummary></fsummary>
- <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_get">erl_drv_tsd_get</seealso>.
- </p></desc>
- </func>
- <func><name><ret>void</ret><nametext>enif_tsd_set(ErlNifTSDKey key, void *data)</nametext></name>
- <fsummary></fsummary>
- <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_set">erl_drv_tsd_set</seealso>.
- </p></desc>
- </func>
-
-
- <func>
- <name><ret>ErlNifTime</ret><nametext>enif_monotonic_time(ErlNifTimeUnit time_unit)</nametext></name>
- <fsummary>Get Erlang Monotonic Time</fsummary>
- <desc>
- <marker id="enif_monotonic_time"></marker>
- <p>Arguments:</p>
- <taglist>
- <tag><c>time_unit</c></tag>
- <item>Time unit of returned value.</item>
- </taglist>
- <p>
- Returns
- <seealso marker="time_correction#Erlang_Monotonic_Time">Erlang
- monotonic time</seealso>. Note that it is not uncommon with
- negative values.
- </p>
- <p>Returns <c>ERL_NIF_TIME_ERROR</c> if called with an invalid
- time unit argument, or if called from a thread that is not a
- scheduler thread.</p>
- <p>See also:</p>
- <list>
- <item><seealso marker="#ErlNifTime"><c>ErlNifTime</c></seealso></item>
- <item><seealso marker="#ErlNifTimeUnit"><c>ErlNifTimeUnit</c></seealso></item>
- </list>
- </desc>
- </func>
<func>
<name><ret>ErlNifTime</ret><nametext>enif_time_offset(ErlNifTimeUnit time_unit)</nametext></name>
@@ -1571,33 +1631,26 @@ enif_map_iterator_destroy(env, &amp;iter);
</desc>
</func>
- <func>
- <name><ret>ErlNifTime</ret><nametext>enif_convert_time_unit(ErlNifTime val, ErlNifTimeUnit from, ErlNifTimeUnit to)</nametext></name>
- <fsummary>Convert time unit of a time value</fsummary>
- <desc>
- <marker id="enif_convert_time_unit"></marker>
- <p>Arguments:</p>
- <taglist>
- <tag><c>val</c></tag>
- <item>Value to convert time unit for.</item>
- <tag><c>from</c></tag>
- <item>Time unit of <c>val</c>.</item>
- <tag><c>to</c></tag>
- <item>Time unit of returned value.</item>
- </taglist>
- <p>Converts the <c>val</c> value of time unit <c>from</c> to
- the corresponding value of time unit <c>to</c>. The result is
- rounded using the floor function.</p>
- <p>Returns <c>ERL_NIF_TIME_ERROR</c> if called with an invalid
- time unit argument.</p>
- <p>See also:</p>
- <list>
- <item><seealso marker="#ErlNifTime"><c>ErlNifTime</c></seealso></item>
- <item><seealso marker="#ErlNifTimeUnit"><c>ErlNifTimeUnit</c></seealso></item>
- </list>
- </desc>
+ <func><name><ret>int</ret><nametext>enif_tsd_key_create(char *name, ErlNifTSDKey *key)</nametext></name>
+ <fsummary></fsummary>
+ <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_key_create">erl_drv_tsd_key_create</seealso>.
+ </p></desc>
+ </func>
+ <func><name><ret>void</ret><nametext>enif_tsd_key_destroy(ErlNifTSDKey key)</nametext></name>
+ <fsummary></fsummary>
+ <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_key_destroy">erl_drv_tsd_key_destroy</seealso>.
+ </p></desc>
+ </func>
+ <func><name><ret>void *</ret><nametext>enif_tsd_get(ErlNifTSDKey key)</nametext></name>
+ <fsummary></fsummary>
+ <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_get">erl_drv_tsd_get</seealso>.
+ </p></desc>
+ </func>
+ <func><name><ret>void</ret><nametext>enif_tsd_set(ErlNifTSDKey key, void *data)</nametext></name>
+ <fsummary></fsummary>
+ <desc><p>Same as <seealso marker="erl_driver#erl_drv_tsd_set">erl_drv_tsd_set</seealso>.
+ </p></desc>
</func>
-
</funcs>
<section>
<title>SEE ALSO</title>