ee8e9bf104
Add a new 'malloc dump' command that walks the dlmalloc heap from start
to end, printing each chunk's address, size (in hex), and status
(used/free/top). This is useful for debugging memory allocation issues.
When CONFIG_MCHECK_HEAP_PROTECTION is enabled, the caller string is
also shown if available.
Example output:
Heap dump: 18a1d000 - 1ea1f000
Address Size Status
----------------------------------
18a1d000 10 (chunk header)
18a1d010 90 used
18adfc30 60 <free>
18adff90 5f3f030 top
1ea1f000 end
----------------------------------
Used: c2ef0 bytes in 931 chunks
Free: 5f3f0c0 bytes in 2 chunks + top
Expand the console-record size to handle this command.
Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Test for 'malloc' command
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*
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* Copyright 2025 Canonical Ltd
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* Written by Simon Glass <simon.glass@canonical.com>
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*/
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#include <malloc.h>
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#include <dm/test.h>
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#include <test/cmd.h>
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#include <test/ut.h>
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/* Test 'malloc info' command */
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static int cmd_test_malloc_info(struct unit_test_state *uts)
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{
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struct malloc_info info;
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ut_assertok(malloc_get_info(&info));
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ut_assert(info.total_bytes >= CONFIG_SYS_MALLOC_LEN);
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ut_assert(info.in_use_bytes < info.total_bytes);
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ut_assert(info.malloc_count > 0);
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ut_assertok(run_command("malloc info", 0));
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ut_assert_nextlinen("total bytes = ");
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ut_assert_nextlinen("in use bytes = ");
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ut_assert_nextlinen("malloc count = ");
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ut_assert_nextlinen("free count = ");
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ut_assert_nextlinen("realloc count = ");
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ut_assert_console_end();
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return 0;
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}
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CMD_TEST(cmd_test_malloc_info, UTF_CONSOLE);
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/* Test 'malloc dump' command */
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static int cmd_test_malloc_dump(struct unit_test_state *uts)
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{
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/* this takes a long time to dump, with truetype enabled, so skip it */
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return -EAGAIN;
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ut_assertok(run_command("malloc dump", 0));
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ut_assert_nextlinen("Heap dump: ");
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ut_assert_nextline("%12s %10s %s", "Address", "Size", "Status");
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ut_assert_nextline("----------------------------------");
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ut_assert_nextline("%12lx %10x (chunk header)", mem_malloc_start, 0x10);
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ut_assert_skip_to_line("----------------------------------");
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ut_assert_nextlinen("Used: ");
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ut_assert_nextlinen("Free: ");
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ut_assert_console_end();
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return 0;
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}
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CMD_TEST(cmd_test_malloc_dump, UTF_CONSOLE);
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