diff options
Diffstat (limited to 'apps/examples/mm')
-rw-r--r-- | apps/examples/mm/Kconfig | 13 | ||||
-rw-r--r-- | apps/examples/mm/Makefile | 93 | ||||
-rw-r--r-- | apps/examples/mm/mm_main.c | 300 |
3 files changed, 406 insertions, 0 deletions
diff --git a/apps/examples/mm/Kconfig b/apps/examples/mm/Kconfig new file mode 100644 index 000000000..81ce4c453 --- /dev/null +++ b/apps/examples/mm/Kconfig @@ -0,0 +1,13 @@ +# +# For a description of the syntax of this configuration file, +# see misc/tools/kconfig-language.txt. +# + +config EXAMPLES_MM + bool "Memory management example" + default n + ---help--- + Enable the memory management example + +if EXAMPLES_MM +endif diff --git a/apps/examples/mm/Makefile b/apps/examples/mm/Makefile new file mode 100644 index 000000000..e5d9ffb4c --- /dev/null +++ b/apps/examples/mm/Makefile @@ -0,0 +1,93 @@ +############################################################################ +# apps/examples/mm/Makefile +# +# Copyright (C) 2011 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt <spudmonkey@racsa.co.cr> +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name NuttX nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +-include $(TOPDIR)/.config +-include $(TOPDIR)/Make.defs +include $(APPDIR)/Make.defs + +# Memory Management Test + +ASRCS = +CSRCS = mm_main.c + +AOBJS = $(ASRCS:.S=$(OBJEXT)) +COBJS = $(CSRCS:.c=$(OBJEXT)) + +SRCS = $(ASRCS) $(CSRCS) +OBJS = $(AOBJS) $(COBJS) + +ifeq ($(WINTOOL),y) + BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}" +else + BIN = "$(APPDIR)/libapps$(LIBEXT)" +endif + +ROOTDEPPATH = --dep-path . + +# Common build + +VPATH = + +all: .built +.PHONY: clean depend distclean + +$(AOBJS): %$(OBJEXT): %.S + $(call ASSEMBLE, $<, $@) + +$(COBJS): %$(OBJEXT): %.c + $(call COMPILE, $<, $@) + +.built: $(OBJS) + @( for obj in $(OBJS) ; do \ + $(call ARCHIVE, $(BIN), $${obj}); \ + done ; ) + @touch .built + +context: + +.depend: Makefile $(SRCS) + @$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep + @touch $@ + +depend: .depend + +clean: + @rm -f *.o *~ .*.swp .built + $(call CLEAN) + +distclean: clean + @rm -f Make.dep .depend + +-include Make.dep diff --git a/apps/examples/mm/mm_main.c b/apps/examples/mm/mm_main.c new file mode 100644 index 000000000..036c39047 --- /dev/null +++ b/apps/examples/mm/mm_main.c @@ -0,0 +1,300 @@ +/**************************************************************************** + * examples/mm/mm_main.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define NTEST_ALLOCS 32 + +/* #define STOP_ON_ERRORS do{}while(0) */ +#define STOP_ON_ERRORS exit(1) + +/* All other definitions derive from these two */ + +#define MM_MIN_SHIFT 4 /* 16 bytes */ +#define MM_MIN_CHUNK (1 << MM_MIN_SHIFT) +#define MM_GRAN_MASK (MM_MIN_CHUNK-1) +#define MM_ALIGN_UP(a) (((a) + MM_GRAN_MASK) & ~MM_GRAN_MASK) +#define MM_ALIGN_DOWN(a) ((a) & ~MM_GRAN_MASK) + +#ifdef CONFIG_SMALL_MEMORY +# define SIZEOF_MM_ALLOCNODE 4 +#else +# define SIZEOF_MM_ALLOCNODE 8 +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ +/* Test allocations */ + +static const int alloc_sizes[NTEST_ALLOCS] = +{ + 1024, 12, 962, 5692, 10254, 111, 9932, 601, + 222, 2746, 3, 124321, 68, 776, 6750, 852, + 4732, 28, 901, 480, 5011, 1536, 2011, 81647, + 646, 1646, 69179, 194, 2590, 7, 969, 70 +}; + +static const int realloc_sizes[NTEST_ALLOCS] = +{ + 18, 3088, 963, 123, 511, 11666, 3723, 42, + 9374, 1990, 1412, 6, 592, 4088, 11, 5040, + 8663, 91255, 28, 4346, 9172, 168, 229, 4734, + 59139, 221, 7830, 30421, 1666, 4, 812, 416 +}; + +static const int random1[NTEST_ALLOCS] = +{ + 20, 11, 3, 31, 9, 29, 7, 17, + 21, 2, 26, 18, 14, 25, 0, 10, + 27, 19, 22, 28, 8, 30, 12, 15, + 4, 1, 24, 6, 16, 13, 5, 23 +}; + +static const int random2[NTEST_ALLOCS] = +{ + 2, 19, 12, 23, 30, 11, 27, 4, + 20, 7, 0, 16, 28, 15, 5, 24, + 10, 17, 25, 31, 8, 29, 3, 26, + 9, 18, 22, 13, 1, 21, 14, 6 +}; + +static const int random3[NTEST_ALLOCS] = +{ + 8, 17, 3, 18, 26, 23, 30, 11, + 12, 22, 4, 20, 25, 10, 27, 1, + 29, 14, 19, 21, 0, 31, 7, 24, + 9, 15, 2, 28, 16, 6, 13, 5 +}; + +static const int alignment[NTEST_ALLOCS/2] = +{ + 128, 2048, 131072, 8192, 32, 32768, 16384 , 262144, + 512, 4096, 65536, 8, 64, 1024, 16, 4 +}; + +static void *allocs[NTEST_ALLOCS]; +static struct mallinfo alloc_info; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +static void mm_showmallinfo(void) +{ + alloc_info = mallinfo(); + printf(" mallinfo:\n"); + printf(" Total space allocated from system = %ld\n", + alloc_info.arena); + printf(" Number of non-inuse chunks = %ld\n", + alloc_info.ordblks); + printf(" Largest non-inuse chunk = %ld\n", + alloc_info.mxordblk); + printf(" Total allocated space = %ld\n", + alloc_info.uordblks); + printf(" Total non-inuse space = %ld\n", + alloc_info.fordblks); +} + +static void do_mallocs(void **mem, const int *size, const int *seq, int n) +{ + int i; + int j; + + for (i = 0; i < n; i++) + { + j = seq[i]; + if (!mem[j]) + { + printf("(%d)Allocating %d bytes\n", i, size[j]); + mem[j] = malloc(size[j]); + printf("(%d)Memory allocated at %p\n", i, mem[j]); + if (mem[j] == NULL) + { + int allocsize = MM_ALIGN_UP(size[j] + SIZEOF_MM_ALLOCNODE); + fprintf(stderr, "(%d)malloc failed for allocsize=%d\n", i, allocsize); + if (allocsize > alloc_info.mxordblk) + { + fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk); + } + else + { + fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk); + exit(1); + } + } + else + { + memset(mem[j], 0xAA, size[j]); + } + + mm_showmallinfo(); + } + } +} + +static void do_reallocs(void **mem, const int *oldsize, const int *newsize, const int *seq, int n) +{ + int i; + int j; + + for (i = 0; i < n; i++) + { + j = seq[i]; + printf("(%d)Re-allocating at %p from %d to %d bytes\n", + i, mem[j], oldsize[j], newsize[j]); + mem[j] = realloc(mem[j], newsize[j]); + printf("(%d)Memory re-allocated at %p\n", i, mem[j]); + if (mem[j] == NULL) + { + int allocsize = MM_ALIGN_UP(newsize[j] + SIZEOF_MM_ALLOCNODE); + fprintf(stderr, "(%d)realloc failed for allocsize=%d\n", i, allocsize); + if (allocsize > alloc_info.mxordblk) + { + fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk); + } + else + { + fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk); + exit(1); + } + } + else + { + memset(mem[j], 0x55, newsize[j]); + } + + mm_showmallinfo(); + } +} + +static void do_memaligns(void **mem, const int *size, const int *align, const int *seq, int n) +{ + int i; + int j; + + for (i = 0; i < n; i++) + { + j = seq[i]; + printf("(%d)Allocating %d bytes aligned to 0x%08x\n", + i, size[j], align[i]); + mem[j] = memalign(align[i], size[j]); + printf("(%d)Memory allocated at %p\n", i, mem[j]); + if (mem[j] == NULL) + { + int allocsize = MM_ALIGN_UP(size[j] + SIZEOF_MM_ALLOCNODE) + 2*align[i]; + fprintf(stderr, "(%d)memalign failed for allocsize=%d\n", i, allocsize); + if (allocsize > alloc_info.mxordblk) + { + fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk); + } + else + { + fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk); + exit(1); + } + } + else + { + memset(mem[j], 0x33, size[j]); + } + + mm_showmallinfo(); + } +} + +static void do_frees(void **mem, const int *size, const int *seq, int n) +{ + int i; + int j; + + for (i = 0; i < n; i++) + { + j = seq[i]; + printf("(%d)Releasing memory at %p (size=%d bytes)\n", + i, mem[j], size[j]); + free(mem[j]); + mem[j] = NULL; + + mm_showmallinfo(); + } +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: user_start + ****************************************************************************/ + +int user_start(int argc, char *argv[]) +{ + mm_showmallinfo(); + + /* Allocate some memory */ + + do_mallocs(allocs, alloc_sizes, random1, NTEST_ALLOCS); + + /* Re-allocate the memory */ + + do_reallocs(allocs, alloc_sizes, realloc_sizes, random2, NTEST_ALLOCS); + + /* Release the memory */ + + do_frees(allocs, realloc_sizes, random3, NTEST_ALLOCS); + + /* Allocate aligned memory */ + + do_memaligns(allocs, alloc_sizes, alignment, random2, NTEST_ALLOCS/2); + do_memaligns(allocs, alloc_sizes, alignment, &random2[NTEST_ALLOCS/2], NTEST_ALLOCS/2); + + /* Release aligned memory */ + + do_frees(allocs, alloc_sizes, random1, NTEST_ALLOCS); + + printf("TEST COMPLETE\n"); + return 0; +} |