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Slab allocator update

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Unused slabs which get recycled are no longer reinitialized from scratch if their chunk size matches what the allocator needed. If the chunk size matches, the list of available chunks is left unchanged, and just the various counters are reset.

Added __get_slab_stats() function.

Added support for global __slab_purge_threshold tuning variable.

Added a short test program for the slab allocator.

The malloc-test program was linked against the wrong object file in GNUmakefile.68k. Fixed.
This commit is contained in:
obarthel
2016-11-27 15:53:40 +01:00
parent ac710b333e
commit 5617c0eacf
28 changed files with 538 additions and 105 deletions
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16
test_programs/GNUmakefile.68k
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@ -13,7 +13,7 @@ DELETE = delete all quiet
.c.o:
@echo "Compiling $<"
@$(CC) -c $(CFLAGS) $<
$(CC) -c $(CFLAGS) $<
##############################################################################
@ -31,7 +31,7 @@ WARNINGS = \
INCLUDE = -I../library/include
LIB = -L../library/lib
OPTIONS = -DNDEBUG -fno-builtin -fwritable-strings -DNO_INLINE_STDARG -DIEEE_FLOATING_POINT_SUPPORT -DVERBOSE
OPTIONS = -DNDEBUG -fno-builtin -fwritable-strings -DNO_INLINE_STDARG -DIEEE_FLOATING_POINT_SUPPORT -DVERBOSE=1
#OPTIONS = -D__MEM_DEBUG -fno-builtin
#OPTIONS = -DDEBUG -D__MEM_DEBUG -DNO_INLINE_STDARG -fno-builtin
OPTIMIZE = -O
@ -50,14 +50,14 @@ all: test fgets_test iotest sscanf_test printf_test sprintf_test \
stack_size_test translate_test strtok_test uname simple \
fstat_stdout_test simple_sprintf date_test sscanf_64 factorial \
execvp_test setlocale rand fstat_test base_dir_nametest \
malloc-test
malloc-test slab-test
clean:
$(DELETE) #?.o #?.map test fgets_test iotest sscanf_test printf_test \
sprintf_test stack_size_test translate_test strtok_test uname \
simple fstat_stdout_test fstat_test simple_sprintf date_test sscanf_64 \
factorial execvp_test setlocale rand base_dir_nametest \
malloc-test
malloc-test slab-test
##############################################################################
@ -145,9 +145,13 @@ rand : rand.o
@echo "Linking $@"
$(CC) $(CFLAGS) -o $@ rand.o $(LIBS) -Wl,--cref,-M,-Map=$@.map
malloc-test: malloc-test.o
malloc-test : malloc-test.o
@echo "Linking $@"
$(CC) $(CFLAGS) -o $@ rand.o $(LIBS) -Wl,--cref,-M,-Map=$@.map
$(CC) $(CFLAGS) -o $@ malloc-test.o $(LIBS) -Wl,--cref,-M,-Map=$@.map
slab-test : slab-test.o
@echo "Linking $@"
$(CC) $(CFLAGS) -o $@ slab-test.o $(LIBS) -Wl,--cref,-M,-Map=$@.map
##############################################################################