Mercurial > cpython-lru_cache-weakref

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 974d4844d5a7
children
line wrap: on
line source

diff -r -N -u libffi.orig/autom4te.cache/output.0 libffi/autom4te.cache/output.0
diff -r -N -u libffi.orig/configure libffi/configure
--- libffi.orig/configure	2013-03-17 15:37:50.000000000 -0700
+++ libffi/configure	2013-03-18 15:11:39.611575163 -0700
@@ -13368,6 +13368,10 @@
 	fi
 	;;
 
+  i*86-*-nto-qnx*)
+        TARGET=X86; TARGETDIR=x86
+        ;;
+
   x86_64-*-darwin*)
 	TARGET=X86_DARWIN; TARGETDIR=x86
 	;;
@@ -13426,12 +13430,12 @@
 	;;
 
   mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
-	TARGET=MIPS; TARGETDIR=mips
+	TARGET=MIPS_IRIX; TARGETDIR=mips
 	;;
   mips*-*-linux* | mips*-*-openbsd*)
 	# Support 128-bit long double for NewABI.
 	HAVE_LONG_DOUBLE='defined(__mips64)'
-	TARGET=MIPS; TARGETDIR=mips
+	TARGET=MIPS_IRIX; TARGETDIR=mips
 	;;
 
   powerpc*-*-linux* | powerpc-*-sysv*)
@@ -13491,7 +13495,7 @@
   as_fn_error $? "\"libffi has not been ported to $host.\"" "$LINENO" 5
 fi
 
- if test x$TARGET = xMIPS; then
+ if expr x$TARGET : 'xMIPS' > /dev/null; then
   MIPS_TRUE=
   MIPS_FALSE='#'
 else
@@ -14862,6 +14866,12 @@
 ac_config_files="$ac_config_files include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc"
 
 
+ac_config_links="$ac_config_links include/ffi_common.h:include/ffi_common.h"
+
+
+ac_config_files="$ac_config_files fficonfig.py"
+
+
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -16047,6 +16057,8 @@
     "testsuite/Makefile") CONFIG_FILES="$CONFIG_FILES testsuite/Makefile" ;;
     "man/Makefile") CONFIG_FILES="$CONFIG_FILES man/Makefile" ;;
     "libffi.pc") CONFIG_FILES="$CONFIG_FILES libffi.pc" ;;
+    "include/ffi_common.h") CONFIG_LINKS="$CONFIG_LINKS include/ffi_common.h:include/ffi_common.h" ;;
+    "fficonfig.py") CONFIG_FILES="$CONFIG_FILES fficonfig.py" ;;
 
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
diff -r -N -u libffi.orig/configure.ac libffi/configure.ac
--- libffi.orig/configure.ac	2013-03-17 15:37:50.000000000 -0700
+++ libffi/configure.ac	2013-03-18 15:11:11.392989136 -0700
@@ -1,4 +1,7 @@
 dnl Process this with autoconf to create configure
+#
+# file from libffi - slightly patched for Python's ctypes
+#
 
 AC_PREREQ(2.68)
 
@@ -146,6 +149,10 @@
 	fi	  
 	;;
 
+  i*86-*-nto-qnx*) 
+        TARGET=X86; TARGETDIR=x86
+        ;;
+
   x86_64-*-darwin*)
 	TARGET=X86_DARWIN; TARGETDIR=x86
 	;;
@@ -204,12 +211,12 @@
 	;;
 
   mips-sgi-irix5.* | mips-sgi-irix6.* | mips*-*-rtems*)
-	TARGET=MIPS; TARGETDIR=mips
+	TARGET=MIPS_IRIX; TARGETDIR=mips
 	;;
   mips*-*-linux* | mips*-*-openbsd*)
 	# Support 128-bit long double for NewABI.
 	HAVE_LONG_DOUBLE='defined(__mips64)'
-	TARGET=MIPS; TARGETDIR=mips
+	TARGET=MIPS_IRIX; TARGETDIR=mips
 	;;
 
   powerpc*-*-linux* | powerpc-*-sysv*)
@@ -269,7 +276,7 @@
   AC_MSG_ERROR(["libffi has not been ported to $host."])
 fi
 
-AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
+AM_CONDITIONAL(MIPS,[expr x$TARGET : 'xMIPS' > /dev/null])
 AM_CONDITIONAL(BFIN, test x$TARGET = xBFIN)
 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
 AM_CONDITIONAL(X86, test x$TARGET = xX86)
@@ -567,4 +574,8 @@
 
 AC_CONFIG_FILES(include/Makefile include/ffi.h Makefile testsuite/Makefile man/Makefile libffi.pc)
 
+AC_CONFIG_LINKS(include/ffi_common.h:include/ffi_common.h)
+
+AC_CONFIG_FILES(fficonfig.py)
+
 AC_OUTPUT
--- libffi-3.0.11/fficonfig.py.in	1970-01-01 01:00:00.000000000 +0100
+++ libffi/fficonfig.py.in	2012-03-15 01:04:27.000000000 +0100
@@ -0,0 +1,35 @@
+ffi_sources = """
+src/prep_cif.c
+src/closures.c
+src/dlmalloc.c
+""".split()
+
+ffi_platforms = {
+    'MIPS_IRIX': ['src/mips/ffi.c', 'src/mips/o32.S', 'src/mips/n32.S'],
+    'MIPS_LINUX': ['src/mips/ffi.c', 'src/mips/o32.S'],
+    'X86': ['src/x86/ffi.c', 'src/x86/sysv.S'],
+    'X86_FREEBSD': ['src/x86/ffi.c', 'src/x86/freebsd.S'],
+    'X86_WIN32': ['src/x86/ffi.c', 'src/x86/win32.S'],
+    'SPARC': ['src/sparc/ffi.c', 'src/sparc/v8.S', 'src/sparc/v9.S'],
+    'ALPHA': ['src/alpha/ffi.c', 'src/alpha/osf.S'],
+    'IA64': ['src/ia64/ffi.c', 'src/ia64/unix.S'],
+    'M32R': ['src/m32r/sysv.S', 'src/m32r/ffi.c'],
+    'M68K': ['src/m68k/ffi.c', 'src/m68k/sysv.S'],
+    'POWERPC': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S', 'src/powerpc/linux64.S', 'src/powerpc/linux64_closure.S'],
+    'POWERPC_AIX': ['src/powerpc/ffi_darwin.c', 'src/powerpc/aix.S', 'src/powerpc/aix_closure.S'],
+    'POWERPC_FREEBSD': ['src/powerpc/ffi.c', 'src/powerpc/sysv.S', 'src/powerpc/ppc_closure.S'],
+    'ARM': ['src/arm/sysv.S', 'src/arm/ffi.c'],
+    'LIBFFI_CRIS': ['src/cris/sysv.S', 'src/cris/ffi.c'],
+    'FRV': ['src/frv/eabi.S', 'src/frv/ffi.c'],
+    'S390': ['src/s390/sysv.S', 'src/s390/ffi.c'],
+    'X86_64': ['src/x86/ffi64.c', 'src/x86/unix64.S', 'src/x86/ffi.c', 'src/x86/sysv.S'],
+    'SH': ['src/sh/sysv.S', 'src/sh/ffi.c'],
+    'SH64': ['src/sh64/sysv.S', 'src/sh64/ffi.c'],
+    'PA': ['src/pa/linux.S', 'src/pa/ffi.c'],
+    'PA_LINUX': ['src/pa/linux.S', 'src/pa/ffi.c'],
+    'PA_HPUX': ['src/pa/hpux32.S', 'src/pa/ffi.c'],
+}
+
+ffi_sources += ffi_platforms['@TARGET@']
+
+ffi_cflags = '@CFLAGS@'
diff -urN libffi-3.0.11/src/dlmalloc.c libffi/src/dlmalloc.c
--- libffi-3.0.11/src/dlmalloc.c	2012-04-12 04:46:06.000000000 +0200
+++ libffi/src/dlmalloc.c	2012-06-26 15:15:58.949547461 +0200
@@ -457,6 +457,11 @@
 #define LACKS_ERRNO_H
 #define MALLOC_FAILURE_ACTION
 #define MMAP_CLEARS 0 /* WINCE and some others apparently don't clear */
+#elif !defined _GNU_SOURCE
+/* mremap() on Linux requires this via sys/mman.h
+ * See roundup issue 10309
+ */
+#define _GNU_SOURCE 1
 #endif  /* WIN32 */
 
 #ifdef __OS2__