Merge branch 'dev'3.0.0

Conflicts:
	ChangeLog
	include/jemalloc/internal/chunk.h
	src/chunk.c
	src/huge.c
	src/jemalloc.c
	test/rallocm.c

1 files changed, 57 insertions, 36 deletions

diff --git a/INSTALL b/INSTALL
index 2a1e469..e40a7ed 100644
--- a/INSTALL
+++ b/INSTALL
@@ -26,6 +26,19 @@ any of the following arguments (not a definitive list) to 'configure':
     Embed one or more library paths, so that libjemalloc can find the libraries
     it is linked to.  This works only on ELF-based systems.
 
+--with-mangling=<map>
+    Mangle public symbols specified in <map> which is a comma-separated list of
+    name:mangled pairs.
+
+    For example, to use ld's --wrap option as an alternative method for
+    overriding libc's malloc implementation, specify something like:
+
+      --with-mangling=malloc:__wrap_malloc,free:__wrap_free[...]
+
+    Note that mangling happens prior to application of the prefix specified by
+    --with-jemalloc-prefix, and mangled symbols are then ignored when applying
+    the prefix.
+
 --with-jemalloc-prefix=<prefix>
     Prefix all public APIs with <prefix>.  For example, if <prefix> is
     "prefix_", API changes like the following occur:
@@ -62,8 +75,8 @@ any of the following arguments (not a definitive list) to 'configure':
     Enable assertions and validation code.  This incurs a substantial
     performance hit, but is very useful during application development.
 
---enable-stats
-    Enable statistics gathering functionality.  See the "opt.stats_print"
+--disable-stats
+    Disable statistics gathering functionality.  See the "opt.stats_print"
     option documentation for usage details.
 
 --enable-prof
@@ -90,51 +103,50 @@ any of the following arguments (not a definitive list) to 'configure':
     Statically link against the specified libunwind.a rather than dynamically
     linking with -lunwind.
 
---disable-tiny
-    Disable tiny (sub-quantum-sized) object support.  Technically it is not
-    legal for a malloc implementation to allocate objects with less than
-    quantum alignment (8 or 16 bytes, depending on architecture), but in
-    practice it never causes any problems if, for example, 4-byte allocations
-    are 4-byte-aligned.
-
 --disable-tcache
     Disable thread-specific caches for small objects.  Objects are cached and
     released in bulk, thus reducing the total number of mutex operations.  See
     the "opt.tcache" option for usage details.
 
---enable-swap
-    Enable mmap()ed swap file support.  When this feature is built in, it is
-    possible to specify one or more files that act as backing store.  This
-    effectively allows for per application swap files.
+--enable-mremap
+    Enable huge realloc() via mremap(2).  mremap() is disabled by default
+    because the flavor used is specific to Linux, which has a quirk in its
+    virtual memory allocation algorithm that causes semi-permanent VM map holes
+    under normal jemalloc operation.
+
+--disable-munmap
+    Disable virtual memory deallocation via munmap(2); instead keep track of
+    the virtual memory for later use.  munmap() is disabled by default (i.e.
+    --disable-munmap is implied) on Linux, which has a quirk in its virtual
+    memory allocation algorithm that causes semi-permanent VM map holes under
+    normal jemalloc operation.
 
 --enable-dss
     Enable support for page allocation/deallocation via sbrk(2), in addition to
     mmap(2).
 
---enable-fill
-    Enable support for junk/zero filling of memory.  See the "opt.junk"/
-    "opt.zero" option documentation for usage details.
+--disable-fill
+    Disable support for junk/zero filling of memory, quarantine, and redzones.
+    See the "opt.junk", "opt.zero", "opt.quarantine", and "opt.redzone" option
+    documentation for usage details.
+
+--disable-valgrind
+    Disable support for Valgrind.
+
+--disable-experimental
+    Disable support for the experimental API (*allocm()).
+
+--enable-utrace
+    Enable utrace(2)-based allocation tracing.  This feature is not broadly
+    portable (FreeBSD has it, but Linux and OS X do not).
 
 --enable-xmalloc
     Enable support for optional immediate termination due to out-of-memory
     errors, as is commonly implemented by "xmalloc" wrapper function for malloc.
     See the "opt.xmalloc" option documentation for usage details.
 
---enable-sysv
-    Enable support for System V semantics, wherein malloc(0) returns NULL
-    rather than a minimal allocation.  See the "opt.sysv" option documentation
-    for usage details.
-
---enable-dynamic-page-shift
-    Under most conditions, the system page size never changes (usually 4KiB or
-    8KiB, depending on architecture and configuration), and unless this option
-    is enabled, jemalloc assumes that page size can safely be determined during
-    configuration and hard-coded.  Enabling dynamic page size determination has
-    a measurable impact on performance, since the compiler is forced to load
-    the page size from memory rather than embedding immediate values.
-
---disable-lazy-lock
-    Disable code that wraps pthread_create() to detect when an application
+--enable-lazy-lock
+    Enable code that wraps pthread_create() to detect when an application
     switches from single-threaded to multi-threaded mode, so that it can avoid
     mutex locking/unlocking operations while in single-threaded mode.  In
     practice, this feature usually has little impact on performance unless
@@ -181,11 +193,24 @@ PATH="?"
 
 === Advanced compilation =======================================================
 
+To build only parts of jemalloc, use the following targets:
+
+    build_lib_shared
+    build_lib_static
+    build_lib
+    build_doc_html
+    build_doc_man
+    build_doc
+
 To install only parts of jemalloc, use the following targets:
 
     install_bin
     install_include
+    install_lib_shared
+    install_lib_static
     install_lib
+    install_doc_html
+    install_doc_man
     install_doc
 
 To clean up build results to varying degrees, use the following make targets:
@@ -248,10 +273,6 @@ directory, issue configuration and build commands:
 
 The manual page is generated in both html and roff formats.  Any web browser
 can be used to view the html manual.  The roff manual page can be formatted
-prior to installation via any of the following commands:
+prior to installation via the following command:
 
     nroff -man -t doc/jemalloc.3
-
-    groff -man -t -Tps doc/jemalloc.3 | ps2pdf - doc/jemalloc.3.pdf
-
-    (cd doc; groff -man -man-ext -t -Thtml jemalloc.3 > jemalloc.3.html)