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-rw-r--r--erts/doc/src/erl.xml2
-rw-r--r--erts/doc/src/erl_dist_protocol.xml2
-rw-r--r--erts/doc/src/erl_ext_dist.xml2
-rw-r--r--erts/doc/src/erl_nif.xml49
-rw-r--r--erts/doc/src/erlang.xml2
-rw-r--r--erts/doc/src/escript.xml2
-rw-r--r--erts/doc/src/notes.xml242
7 files changed, 276 insertions, 25 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 1e6e290f6b..a66d273438 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -4,7 +4,7 @@
<comref>
<header>
<copyright>
- <year>1996</year><year>2010</year>
+ <year>1996</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
diff --git a/erts/doc/src/erl_dist_protocol.xml b/erts/doc/src/erl_dist_protocol.xml
index 1fe7ac7ecd..6c725fc82d 100644
--- a/erts/doc/src/erl_dist_protocol.xml
+++ b/erts/doc/src/erl_dist_protocol.xml
@@ -5,7 +5,7 @@
<header>
<copyright>
<year>2007</year>
- <year>2007</year>
+ <year>2011</year>
<holder>Ericsson AB, All Rights Reserved</holder>
</copyright>
<legalnotice>
diff --git a/erts/doc/src/erl_ext_dist.xml b/erts/doc/src/erl_ext_dist.xml
index c2d58d1ef1..fd2da2cfe3 100644
--- a/erts/doc/src/erl_ext_dist.xml
+++ b/erts/doc/src/erl_ext_dist.xml
@@ -5,7 +5,7 @@
<header>
<copyright>
<year>2007</year>
- <year>2007</year>
+ <year>2011</year>
<holder>Ericsson AB, All Rights Reserved</holder>
</copyright>
<legalnotice>
diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml
index 5987ddbd5e..4bbd4e2a54 100644
--- a/erts/doc/src/erl_nif.xml
+++ b/erts/doc/src/erl_nif.xml
@@ -193,9 +193,9 @@ ok
A handle ("safe pointer") to this memory block can then be returned to Erlang by the use of
<seealso marker="#enif_make_resource">enif_make_resource</seealso>.
The term returned by <c>enif_make_resource</c>
- is totally opaque in nature. It can be stored and passed between processses
- on the same node, but the only real end usage is to pass it back as argument to a NIF.
- The NIF can then do <seealso marker="#enif_get_resource">enif_get_resource</seealso>
+ is totally opaque in nature. It can be stored and passed between processes
+ on the same node, but the only real end usage is to pass it back as an argument to a NIF.
+ The NIF can then call <seealso marker="#enif_get_resource">enif_get_resource</seealso>
and get back a pointer to the memory block that is guaranteed to still be
valid. A resource object will not be deallocated until the last handle term
has been garbage collected by the VM and the resource has been
@@ -212,17 +212,7 @@ ok
the garbage collector or <c>enif_release_resource</c>). Resource types
are uniquely identified by a supplied name string and the name of the
implementing module.</p>
- <p>Resource types support upgrade in runtime by allowing a loaded NIF
- library to takeover an already existing resource type and thereby
- "inherit" all existing objects of that type. The destructor of the new
- library will thereafter be called for the inherited objects and the
- library with the old destructor function can be safely unloaded. Existing
- resource objects, of a module that is upgraded, must either be deleted
- or taken over by the new NIF library. The unloading of a library will be
- postponed as long as there exist resource objects with a destructor
- function in the library.
- </p>
- <p>Here is a template example of how to create and return a resource object.</p>
+ <marker id="enif_resource_example"/><p>Here is a template example of how to create and return a resource object.</p>
<p/>
<code type="none">
ERL_NIF_TERM term;
@@ -240,8 +230,13 @@ ok
/* resource now only owned by "Erlang" */
}
return term;
-}
-</code>
+ </code>
+ <p>Note that once <c>enif_make_resource</c> creates the term to
+ return to Erlang, the code can choose to either keep its own
+ native pointer to the allocated struct and release it later, or
+ release it immediately and rely solely on the garbage collector
+ to eventually deallocate the resource object when it collects
+ the term.</p>
<p>Another usage of resource objects is to create binary terms with
user defined memory management.
<seealso marker="#enif_make_resource_binary">enif_make_resource_binary</seealso>
@@ -251,6 +246,16 @@ ok
this can be a binary term consisting of data from a <c>mmap</c>'ed file.
The destructor can then do <c>munmap</c> to release the memory
region.</p>
+ <p>Resource types support upgrade in runtime by allowing a loaded NIF
+ library to takeover an already existing resource type and thereby
+ "inherit" all existing objects of that type. The destructor of the new
+ library will thereafter be called for the inherited objects and the
+ library with the old destructor function can be safely unloaded. Existing
+ resource objects, of a module that is upgraded, must either be deleted
+ or taken over by the new NIF library. The unloading of a library will be
+ postponed as long as there exist resource objects with a destructor
+ function in the library.
+ </p>
</item>
<tag>Threads and concurrency</tag>
<item><p>A NIF is thread-safe without any explicit synchronization as
@@ -368,7 +373,7 @@ ok
environments between NIF calls. </p>
<p>A <em>process independent environment</em> is created by calling
<seealso marker="#enif_alloc_env">enif_alloc_env</seealso>. It can be
- used to store terms beteen NIF calls and to send terms with
+ used to store terms between NIF calls and to send terms with
<seealso marker="#enif_send">enif_send</seealso>. A process
independent environment with all its terms is valid until you explicitly
invalidates it with <seealso marker="#enif_free_env">enif_free_env</seealso>
@@ -832,8 +837,14 @@ typedef enum {
<fsummary>Create an opaque handle to a resource object</fsummary>
<desc><p>Create an opaque handle to a memory managed resource object
obtained by <seealso marker="#enif_alloc_resource">enif_alloc_resource</seealso>.
- No ownership transfer is done, the resource object still needs to be released by
- <seealso marker="#enif_release_resource">enif_release_resource</seealso>.</p>
+ No ownership transfer is done, as the resource object still needs to be released by
+ <seealso marker="#enif_release_resource">enif_release_resource</seealso>,
+ but note that the call to <c>enif_release_resource</c> can occur
+ immediately after obtaining the term from <c>enif_make_resource</c>,
+ in which case the resource object will be deallocated when the
+ term is garbage collected. See the
+ <seealso marker="#enif_resource_example">example of creating and
+ returning a resource object</seealso> for more details.</p>
<p>Note that the only defined behaviour of using a resource term in
an Erlang program is to store it and send it between processes on the
same node. Other operations such as matching or <c>term_to_binary</c>
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index c3f06982f5..19f501391f 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2010</year>
+ <year>1996</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
diff --git a/erts/doc/src/escript.xml b/erts/doc/src/escript.xml
index 588508aae6..66e904f64f 100644
--- a/erts/doc/src/escript.xml
+++ b/erts/doc/src/escript.xml
@@ -4,7 +4,7 @@
<comref>
<header>
<copyright>
- <year>2007</year><year>2010</year>
+ <year>2007</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index 77181d3407..c231a57a0e 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -4,7 +4,7 @@
<chapter>
<header>
<copyright>
- <year>2004</year><year>2010</year>
+ <year>2004</year><year>2011</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -30,6 +30,246 @@
</header>
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 5.8.3</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ The scroll wheel now scrolls the werl window on Windows.</p>
+ <p>
+ Own Id: OTP-8985</p>
+ </item>
+ <item>
+ <p>
+ Some malformed distribution messages could cause VM to
+ crash, this is now corrected.</p>
+ <p>
+ Own Id: OTP-8993</p>
+ </item>
+ <item>
+ <p>
+ The OS function getifaddrs() can return NULL in some
+ address fields for e.g PPP and tunnel devices which
+ caused the emulator to segfault. This bug has now been
+ corrected.</p>
+ <p>
+ Own Id: OTP-8996</p>
+ </item>
+ <item>
+ <p>
+ The expression &lt;&lt;A:0&gt;&gt; would always produce
+ an empty binary, even if <c>A</c> was not an integer.
+ Corrected to cause a <c>badarg</c> exception if the type
+ of <c>A</c> is invalid. (Thanks to Zvi.)</p>
+ <p>
+ Own Id: OTP-8997</p>
+ </item>
+ <item>
+ <p>
+ A bug that potentially could cause an emulator crash when
+ deleting an ETS-table has been fixed. A resource leak
+ when hitting the maximum amount of ETS-tables allowed has
+ also been fixed.</p>
+ <p>
+ Own Id: OTP-8999</p>
+ </item>
+ <item>
+ <p>
+ A bug in the <c>exit/2</c> BIF could potentially cause an
+ emulator crash.</p>
+ <p>
+ Own Id: OTP-9005</p>
+ </item>
+ <item>
+ <p>
+ Due to a bug in glibc the runtime system could abort
+ while trying to destroy a mutex. The runtime system will
+ now issue a warning instead of aborting.</p>
+ <p>
+ Own Id: OTP-9009</p>
+ </item>
+ <item>
+ <p>
+ A bug in epmd could create strange behaviour when
+ listen() calls failed. This is now corrected thanks to
+ Steve Vinoski.</p>
+ <p>
+ Own Id: OTP-9024</p>
+ </item>
+ <item>
+ <p>When setting file_info the win32_driver will now
+ correctly set access and modified time. Previously these
+ entities were swapped.</p>
+ <p>
+ Own Id: OTP-9046</p>
+ </item>
+ <item>
+ <p>
+ Setting scheduler bind type to <c>unbound</c> failed if
+ binding of schedulers wasn't supported, or if CPU
+ topology wasn't present. This even though the
+ documentation stated that it is possible to set the bind
+ type to <c>unbound</c>.</p>
+ <p>
+ Own Id: OTP-9056 Aux Id: Seq11779 </p>
+ </item>
+ <item>
+ <p>Two problems were fixed in crash dump: The time left
+ for timers are now shown as unsigned integers and the
+ contents of ordered_set ETS tables is no longer
+ included.</p>
+ <p>
+ Own Id: OTP-9057</p>
+ </item>
+ <item>
+ <p>
+ The VM could fail to set IP_TOS and SO_PRIORITY in
+ certain situations, either because sockets were supplied
+ as open file descriptors, or because SO_PRIORITY by
+ default was set higher than the user can explicitly set
+ it to. Those situations are now handled.</p>
+ <p>
+ Own Id: OTP-9069</p>
+ </item>
+ <item>
+ <p>
+ Wx on MacOS X generated complains on stderr about certain
+ cocoa functions not beeing called from the "Main thread".
+ This is now corrected.</p>
+ <p>
+ Own Id: OTP-9081</p>
+ </item>
+ <item>
+ <p>
+ Fix a couple typos in driver_entry(3) (thanks to Tuncer
+ Ayaz).</p>
+ <p>
+ Own Id: OTP-9085</p>
+ </item>
+ <item>
+ <p>
+ Mention that "-detached" implies "-noinput"</p>
+ <p>
+ Clarify that specifying "-noinput" is unnecessary if the
+ "-detached" flag is given. (thanks to Holger Wei�)</p>
+ <p>
+ Own Id: OTP-9086</p>
+ </item>
+ <item>
+ <p>
+ A potential problem (found by code inspection) when
+ calling a fun whose code was not loaded has been fixed.</p>
+ <p>
+ Own Id: OTP-9095</p>
+ </item>
+ <item>
+ <p>
+ The emulator could get into a state where it didn't check
+ for I/O.</p>
+ <p>
+ Own Id: OTP-9105 Aux Id: Seq11798 </p>
+ </item>
+ <item>
+ <p>
+ Attempting to create binaries exceeding 2Gb (using for
+ example <c>term_to_binary/1</c>) would crash the emulator
+ with an attempt to allocate huge amounts of memory.
+ (Thanks to Jon Meredith.)</p>
+ <p>
+ Own Id: OTP-9117</p>
+ </item>
+ <item>
+ <p>
+ Fix erlang:hibernate/3 on HiPE enabled emulator (Thanks
+ to Paul Guyot)</p>
+ <p>
+ Own Id: OTP-9125</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>From this release, the previously experimental
+ halfword emulator is now official. It can be enabled by
+ giving the <c>--enable-halfword-emulator</c> option to
+ the <c>configure</c> script.</p>
+ <p>The halfword emulator is a 64-bit application, but
+ uses halfwords (32-bit words) for all data in Erlang
+ processes, therefore using less memory and being faster
+ than the standard 64-bit emulator. The total size of all
+ BEAM code and all process data for all processes is
+ limited to 4Gb, but ETS tables and off-heap binaries are
+ only limited by the amount of available memory.</p>
+ <p>
+ Own Id: OTP-8941</p>
+ </item>
+ <item>
+ <p>
+ 32-bit atomic memory operations have been introduced
+ internally in the run time system, and are now used where
+ appropriate. There were previously only atomic memory
+ operations of word size available. The 32-bit atomic
+ memory operations slightly reduce memory consumption, and
+ slightly improve performance on 64-bit runtime systems.</p>
+ <p>
+ Own Id: OTP-8974</p>
+ </item>
+ <item>
+ <p>
+ Performance enhancements for looking up timer-entries and
+ removing timers from the wheel.</p>
+ <p>
+ Own Id: OTP-8990</p>
+ </item>
+ <item>
+ <p>
+ Write accesses to ETS tables have been optimized by
+ reducing the amount of atomic memory operations needed
+ during a write access.</p>
+ <p>
+ Own Id: OTP-9000</p>
+ </item>
+ <item>
+ <p>
+ Strange C coding in the VM made the -D_FORTIFY_SOURCE
+ option to gcc-4.5 react badly. The code is now cleaned up
+ so that it's accepted by gcc-4.5.</p>
+ <p>
+ Own Id: OTP-9025</p>
+ </item>
+ <item>
+ <p>
+ The memory footprint for loaded code has been somewhat
+ reduced (especially in the 64-bit BEAM machine).</p>
+ <p>
+ Own Id: OTP-9030</p>
+ </item>
+ <item>
+ <p>
+ The maximum number of allowed arguments for an Erlang
+ function has been lowered from 256 to 255, so that the
+ number of arguments can now fit in a byte.</p>
+ <p>
+ Own Id: OTP-9049</p>
+ </item>
+ <item>
+ <p>
+ Dependency generation for Makefiles has been added to the
+ compiler and erlc. See the manual pages for
+ <c>compile</c> and <c>erlc</c>. (Thanks to Jean-Sebastien
+ Pedron.)</p>
+ <p>
+ Own Id: OTP-9065</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 5.8.2</title>
<section><title>Fixed Bugs and Malfunctions</title>