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Target Control Debugging: mi Command (Windows Embedded CE 6.0)

  • Article

1/5/2010

This command displays memory information.

Syntax

mi kernel | full

Parameters

  • Kernel
    Displays the kernel memory detail.
  • Full
    Displays a set of tables showing the virtual memory usage for all the processes in the system. The table is made up of ASCII characters that represent what each virtual page is being used for.

Remarks

If you use a command prompt window, enter commands at the Windows Embedded CE prompt. Alternatively, if you use the Platform Builder IDE, from the Target menu choose CE Target Control to display the Target Control window, then enter commands in the Target Control window.

You can use the mi command in three different ways:

  • Use the mi command with no parameter options, mi
    The following output example shows results from the mi command with no options selected:

    Windows CE Kernel Memory Usage Tool 0.2
Page size=4096, 2976 total pages, 2404 free pages.
28 pages used by kernel, 0 pages held by kernel, 572 pages consumed.

Memory usage for Process 808a2180: 'NK.EXE' pid 0
Slot base 02000000  Section ptr 808a18a0
Page summary: code=501(2) data r/o=30 r/w=128 stack=5 reserved=3374

Memory usage for Process 808a221c: 'filesys.exe' pid 1
Slot base 04000000  Section ptr 81fe4000
Page summary: code=76(0) data r/o=23 r/w=13 stack=3 reserved=125

Memory usage for Process 808a22b8: 'shell.exe' pid 2
Slot base 06000000  Section ptr 81fd3000
Page summary: code=61(0) data r/o=23 r/w=6 stack=1 reserved=36

Memory usage for Process 808a2354: 'device.exe' pid 3
Slot base 08000000  Section ptr 81fc8000
Page summary: code=219(2) data r/o=23 r/w=54 stack=12 reserved=404

Memory usage for Process 808a23f0: 'gwes.dll' pid 4
Slot base 0a000000  Section ptr 81f7a000
Page summary: code=161(0) data r/o=198 r/w=234 stack=9 reserved=212

Memory usage for Process 808a248c: 'explorer.exe' pid 5
Slot base 0c000000  Section ptr 81e8b000
Page summary: code=375(0) data r/o=30 r/w=139 stack=8 reserved=165

Mapped file section 0
Slot base 42000000  Section ptr 81fe5000
Page summary: code=0(0) data r/o=0 r/w=17 stack=0 reserved=5197

Total R/W data + stack + RAM code = 633

  • Use the mi command with the kernel option, mi kernel
    The following output example shows results from the mi command with the kernel option:

    Windows CE Kernel Memory Usage Tool 0.2
Page size=4096, 2976 total pages, 2404 free pages.
28 pages used by kernel, 0 pages held by kernel, 572 pages consumed.
Inx Size   Used    Max Extra  Entries Name
 0:  168  5040  5544   504  30( 33) Thread
 1:  188  6768  6768     0  36( 36) Module
 2:   24   504   504     0  21( 21) APISet
 3:   84  6972  7140   168  83( 85) Event
 4:   16   192   272    80  12( 17) CleanEvent
 5:   76 32908 33136   228 433(436) MemBlock
 6:   40  1440  1480    40  36( 37) CallStack
 7:  520  3120  3640   520   6(  7) Name
 8:   44    88    88     0   2(  2) FSMap
 9:   64   832   832     0  13( 13) FullRef
10:  116   116   232   116   1(  2) ThrdDbg
11:   36     0     0     0   0(  0) Proxy
12:  100 22500 22600   100 225(226) Crit
13:  104   312   312     0   3(  3) Mutex
14:   32  4928  5056   128 154(158) HData
Total Used = 85720  Total Extra = 1884  Waste = 40

  • Use the mi command with the full option, mi full
    When you use mi full, the output shows information detailed in a line-marked page summary. The output displays one table per process in the system.
    Each line in a table represents 64K of virtual memory within a process. The first hexadecimal number on each line indicates the base address of the virtual memory for each 64K chunk. The second number on each line, in parentheses, indicates the number of locked pages within the 64K chunk and can generally be ignored.
    When addresses are skipped within a table, it signifies that no pages are presently allocated in the entire 64K chunk. Following the first two numbers on a line is a series of ASCII characters, each representing a single page of memory within the line's 64K chunk.
    The following table shows the memory information definitions that are included in the page summary.

    Character Definition

    <blank>

    A blank space indicates a virtual page that is not currently allocated. Does not require a physical page.

    -

    Reserved but not in use. Indicates a virtual page that is currently allocated but not mapped to any physical memory. Does not require a physical page.

    C

    Code pages in ROM. Does not require a physical page.

    C

    Code pages in RAM. Requires a physical page.

    S

    Indicates a virtual page that holds a stack. Requires a physical page.

    P

    Indicates a virtual page that is used to map a range of hardware addresses; that is, peripheral memory pages used to map target device memory by using VirtualAlloc.

    Does not require a physical page. Peripheral memory may include frame buffer memory.

    W

    Indicates a virtual page that holds read-write data. Requires a physical page. Read-write pages include global variables as well as dynamically allocated memory.

    O

    Indicates a virtual page that is used by the object store. Requires a physical page. Should only appear in the Filesys process.

    ?

    Contents unknown.

    R

    Read-only data pages in RAM. Requires a physical page. Read-only data primarily comes from data items that are declared as a const type in the source code.

    R

    Read-only data pages in ROM. Does not require a physical page. Read-only data primarily comes from data items that are declared as a const type in the source code.

    The following output example shows results from the mi command with the full option:

    Memory usage for Process 808a221c: 'filesys.exe' pid 1
Slot base 04000000  Section ptr 81fe4000
  04000000(1): -----r----------
  04010000(0): -CCCCCCCCCCCCCCC
  04020000(0): CCCCCCWWWWWWWr
  04030000(0): -------------SSS
  04040000(0): WWW-------------
  057f0000(0): -CCCCCCCCCCCCCCC
  05800000(0): CCCCCCCCCCCCCCCC
  05810000(0): CCCCCCCCCCCCCCCC
  05820000(0): CCCCCCCCWRRRRRRR
  05830000(0): RRRRRRRRRRRRRRRR
  05840000(0): --
Page summary: code=76(0) data r/o=23 r/w=13 stack=3 reserved=125

See Also

Concepts

Target Control Debugging Commands
Debugging Resources Overview

Other Resources

Command-Line Options with Target Control