373 lines
14 KiB
Plaintext
373 lines
14 KiB
Plaintext
Building and installing a packaged release of jemalloc can be as simple as
|
|
typing the following while in the root directory of the source tree:
|
|
|
|
./configure
|
|
make
|
|
make install
|
|
|
|
If building from unpackaged developer sources, the simplest command sequence
|
|
that might work is:
|
|
|
|
./autogen.sh
|
|
make dist
|
|
make
|
|
make install
|
|
|
|
Note that documentation is not built by the default target because doing so
|
|
would create a dependency on xsltproc in packaged releases, hence the
|
|
requirement to either run 'make dist' or avoid installing docs via the various
|
|
install_* targets documented below.
|
|
|
|
=== Advanced configuration =====================================================
|
|
|
|
The 'configure' script supports numerous options that allow control of which
|
|
functionality is enabled, where jemalloc is installed, etc. Optionally, pass
|
|
any of the following arguments (not a definitive list) to 'configure':
|
|
|
|
--help
|
|
Print a definitive list of options.
|
|
|
|
--prefix=<install-root-dir>
|
|
Set the base directory in which to install. For example:
|
|
|
|
./configure --prefix=/usr/local
|
|
|
|
will cause files to be installed into /usr/local/include, /usr/local/lib,
|
|
and /usr/local/man.
|
|
|
|
--with-version=<major>.<minor>.<bugfix>-<nrev>-g<gid>
|
|
Use the specified version string rather than trying to generate one (if in
|
|
a git repository) or use existing the VERSION file (if present).
|
|
|
|
--with-rpath=<colon-separated-rpath>
|
|
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:
|
|
|
|
malloc() --> prefix_malloc()
|
|
malloc_conf --> prefix_malloc_conf
|
|
/etc/malloc.conf --> /etc/prefix_malloc.conf
|
|
MALLOC_CONF --> PREFIX_MALLOC_CONF
|
|
|
|
This makes it possible to use jemalloc at the same time as the system
|
|
allocator, or even to use multiple copies of jemalloc simultaneously.
|
|
|
|
By default, the prefix is "", except on OS X, where it is "je_". On OS X,
|
|
jemalloc overlays the default malloc zone, but makes no attempt to actually
|
|
replace the "malloc", "calloc", etc. symbols.
|
|
|
|
--without-export
|
|
Don't export public APIs. This can be useful when building jemalloc as a
|
|
static library, or to avoid exporting public APIs when using the zone
|
|
allocator on OSX.
|
|
|
|
--with-private-namespace=<prefix>
|
|
Prefix all library-private APIs with <prefix>je_. For shared libraries,
|
|
symbol visibility mechanisms prevent these symbols from being exported, but
|
|
for static libraries, naming collisions are a real possibility. By
|
|
default, <prefix> is empty, which results in a symbol prefix of je_ .
|
|
|
|
--with-install-suffix=<suffix>
|
|
Append <suffix> to the base name of all installed files, such that multiple
|
|
versions of jemalloc can coexist in the same installation directory. For
|
|
example, libjemalloc.so.0 becomes libjemalloc<suffix>.so.0.
|
|
|
|
--with-malloc-conf=<malloc_conf>
|
|
Embed <malloc_conf> as a run-time options string that is processed prior to
|
|
the malloc_conf global variable, the /etc/malloc.conf symlink, and the
|
|
MALLOC_CONF environment variable. For example, to change the default decay
|
|
time to 30 seconds:
|
|
|
|
--with-malloc-conf=decay_time:30
|
|
|
|
--disable-cc-silence
|
|
Disable code that silences non-useful compiler warnings. This is mainly
|
|
useful during development when auditing the set of warnings that are being
|
|
silenced.
|
|
|
|
--enable-debug
|
|
Enable assertions and validation code. This incurs a substantial
|
|
performance hit, but is very useful during application development.
|
|
|
|
--enable-code-coverage
|
|
Enable code coverage support, for use during jemalloc test development.
|
|
Additional testing targets are available if this option is enabled:
|
|
|
|
coverage
|
|
coverage_unit
|
|
coverage_integration
|
|
coverage_stress
|
|
|
|
These targets do not clear code coverage results from previous runs, and
|
|
there are interactions between the various coverage targets, so it is
|
|
usually advisable to run 'make clean' between repeated code coverage runs.
|
|
|
|
--disable-stats
|
|
Disable statistics gathering functionality. See the "opt.stats_print"
|
|
option documentation for usage details.
|
|
|
|
--enable-prof
|
|
Enable heap profiling and leak detection functionality. See the "opt.prof"
|
|
option documentation for usage details. When enabled, there are several
|
|
approaches to backtracing, and the configure script chooses the first one
|
|
in the following list that appears to function correctly:
|
|
|
|
+ libunwind (requires --enable-prof-libunwind)
|
|
+ libgcc (unless --disable-prof-libgcc)
|
|
+ gcc intrinsics (unless --disable-prof-gcc)
|
|
|
|
--enable-prof-libunwind
|
|
Use the libunwind library (http://www.nongnu.org/libunwind/) for stack
|
|
backtracing.
|
|
|
|
--disable-prof-libgcc
|
|
Disable the use of libgcc's backtracing functionality.
|
|
|
|
--disable-prof-gcc
|
|
Disable the use of gcc intrinsics for backtracing.
|
|
|
|
--with-static-libunwind=<libunwind.a>
|
|
Statically link against the specified libunwind.a rather than dynamically
|
|
linking with -lunwind.
|
|
|
|
--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 [64-bit] Linux, which has a quirk in its
|
|
virtual memory allocation algorithm that causes semi-permanent VM map holes
|
|
under normal jemalloc operation. Although munmap() causes issues on 32-bit
|
|
Linux as well, it is not disabled by default due to the practical
|
|
possibility of address space exhaustion.
|
|
|
|
--disable-fill
|
|
Disable support for junk/zero filling of memory. See the "opt.junk" and
|
|
"opt.zero" option documentation for usage details.
|
|
|
|
--disable-zone-allocator
|
|
Disable zone allocator for Darwin. This means jemalloc won't be hooked as
|
|
the default allocator on OSX/iOS.
|
|
|
|
--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-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
|
|
thread-specific caching is disabled.
|
|
|
|
--disable-cache-oblivious
|
|
Disable cache-oblivious large allocation alignment for large allocation
|
|
requests with no alignment constraints. If this feature is disabled, all
|
|
large allocations are page-aligned as an implementation artifact, which can
|
|
severely harm CPU cache utilization. However, the cache-oblivious layout
|
|
comes at the cost of one extra page per large allocation, which in the
|
|
most extreme case increases physical memory usage for the 16 KiB size class
|
|
to 20 KiB.
|
|
|
|
--disable-syscall
|
|
Disable use of syscall(2) rather than {open,read,write,close}(2). This is
|
|
intended as a workaround for systems that place security limitations on
|
|
syscall(2).
|
|
|
|
--disable-cxx
|
|
Disable C++ integration. This will cause new and delete operator
|
|
implementations to be omitted.
|
|
|
|
--with-xslroot=<path>
|
|
Specify where to find DocBook XSL stylesheets when building the
|
|
documentation.
|
|
|
|
--with-lg-page=<lg-page>
|
|
Specify the base 2 log of the allocator page size, which must in turn be at
|
|
least as large as the system page size. By default the configure script
|
|
determines the host's page size and sets the allocator page size equal to
|
|
the system page size, so this option need not be specified unless the
|
|
system page size may change between configuration and execution, e.g. when
|
|
cross compiling.
|
|
|
|
--with-lg-page-sizes=<lg-page-sizes>
|
|
Specify the comma-separated base 2 logs of the page sizes to support. This
|
|
option may be useful when cross-compiling in combination with
|
|
--with-lg-page, but its primary use case is for integration with FreeBSD's
|
|
libc, wherein jemalloc is embedded.
|
|
|
|
--with-lg-hugepage=<lg-hugepage>
|
|
Specify the base 2 log of the system huge page size. This option is useful
|
|
when cross compiling, or when overriding the default for systems that do
|
|
not explicitly support huge pages.
|
|
|
|
--with-lg-quantum=<lg-quantum>
|
|
Specify the base 2 log of the minimum allocation alignment. jemalloc needs
|
|
to know the minimum alignment that meets the following C standard
|
|
requirement (quoted from the April 12, 2011 draft of the C11 standard):
|
|
|
|
The pointer returned if the allocation succeeds is suitably aligned so
|
|
that it may be assigned to a pointer to any type of object with a
|
|
fundamental alignment requirement and then used to access such an object
|
|
or an array of such objects in the space allocated [...]
|
|
|
|
This setting is architecture-specific, and although jemalloc includes known
|
|
safe values for the most commonly used modern architectures, there is a
|
|
wrinkle related to GNU libc (glibc) that may impact your choice of
|
|
<lg-quantum>. On most modern architectures, this mandates 16-byte
|
|
alignment (<lg-quantum>=4), but the glibc developers chose not to meet this
|
|
requirement for performance reasons. An old discussion can be found at
|
|
https://sourceware.org/bugzilla/show_bug.cgi?id=206 . Unlike glibc,
|
|
jemalloc does follow the C standard by default (caveat: jemalloc
|
|
technically cheats for size classes smaller than the quantum), but the fact
|
|
that Linux systems already work around this allocator noncompliance means
|
|
that it is generally safe in practice to let jemalloc's minimum alignment
|
|
follow glibc's lead. If you specify --with-lg-quantum=3 during
|
|
configuration, jemalloc will provide additional size classes that are not
|
|
16-byte-aligned (24, 40, and 56).
|
|
|
|
The following environment variables (not a definitive list) impact configure's
|
|
behavior:
|
|
|
|
CFLAGS="?"
|
|
CXXFLAGS="?"
|
|
Pass these flags to the C/C++ compiler. Any flags set by the configure
|
|
script are prepended, which means explicitly set flags generally take
|
|
precedence. Take care when specifying flags such as -Werror, because
|
|
configure tests may be affected in undesirable ways.
|
|
|
|
EXTRA_CFLAGS="?"
|
|
EXTRA_CXXFLAGS="?"
|
|
Append these flags to CFLAGS/CXXFLAGS, without passing them to the
|
|
compiler(s) during configuration. This makes it possible to add flags such
|
|
as -Werror, while allowing the configure script to determine what other
|
|
flags are appropriate for the specified configuration.
|
|
|
|
CPPFLAGS="?"
|
|
Pass these flags to the C preprocessor. Note that CFLAGS is not passed to
|
|
'cpp' when 'configure' is looking for include files, so you must use
|
|
CPPFLAGS instead if you need to help 'configure' find header files.
|
|
|
|
LD_LIBRARY_PATH="?"
|
|
'ld' uses this colon-separated list to find libraries.
|
|
|
|
LDFLAGS="?"
|
|
Pass these flags when linking.
|
|
|
|
PATH="?"
|
|
'configure' uses this to find programs.
|
|
|
|
In some cases it may be necessary to work around configuration results that do
|
|
not match reality. For example, Linux 4.5 added support for the MADV_FREE flag
|
|
to madvise(2), which can cause problems if building on a host with MADV_FREE
|
|
support and deploying to a target without. To work around this, use a cache
|
|
file to override the relevant configuration variable defined in configure.ac,
|
|
e.g.:
|
|
|
|
echo "je_cv_madv_free=no" > config.cache && ./configure -C
|
|
|
|
=== 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:
|
|
|
|
clean
|
|
distclean
|
|
relclean
|
|
|
|
=== Advanced installation ======================================================
|
|
|
|
Optionally, define make variables when invoking make, including (not
|
|
exclusively):
|
|
|
|
INCLUDEDIR="?"
|
|
Use this as the installation prefix for header files.
|
|
|
|
LIBDIR="?"
|
|
Use this as the installation prefix for libraries.
|
|
|
|
MANDIR="?"
|
|
Use this as the installation prefix for man pages.
|
|
|
|
DESTDIR="?"
|
|
Prepend DESTDIR to INCLUDEDIR, LIBDIR, DATADIR, and MANDIR. This is useful
|
|
when installing to a different path than was specified via --prefix.
|
|
|
|
CC="?"
|
|
Use this to invoke the C compiler.
|
|
|
|
CFLAGS="?"
|
|
Pass these flags to the compiler.
|
|
|
|
CPPFLAGS="?"
|
|
Pass these flags to the C preprocessor.
|
|
|
|
LDFLAGS="?"
|
|
Pass these flags when linking.
|
|
|
|
PATH="?"
|
|
Use this to search for programs used during configuration and building.
|
|
|
|
=== Development ================================================================
|
|
|
|
If you intend to make non-trivial changes to jemalloc, use the 'autogen.sh'
|
|
script rather than 'configure'. This re-generates 'configure', enables
|
|
configuration dependency rules, and enables re-generation of automatically
|
|
generated source files.
|
|
|
|
The build system supports using an object directory separate from the source
|
|
tree. For example, you can create an 'obj' directory, and from within that
|
|
directory, issue configuration and build commands:
|
|
|
|
autoconf
|
|
mkdir obj
|
|
cd obj
|
|
../configure --enable-autogen
|
|
make
|
|
|
|
=== Documentation ==============================================================
|
|
|
|
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 the following command:
|
|
|
|
nroff -man -t doc/jemalloc.3
|