finds size of largest block of heap memory
Dependents: myBlueUSB mbed_TANK_Kinect myBlueUSB_ros myBlueUSB_localfix
AvailableMemory.h@0:2b2aa11cebd7, 2011-05-04 (annotated)
- Committer:
- networker
- Date:
- Wed May 04 09:14:02 2011 +0000
- Revision:
- 0:2b2aa11cebd7
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
networker | 0:2b2aa11cebd7 | 1 | /** @file |
networker | 0:2b2aa11cebd7 | 2 | * Return the memory available for a malloc call. |
networker | 0:2b2aa11cebd7 | 3 | */ |
networker | 0:2b2aa11cebd7 | 4 | #ifndef SEGUNDO_UTILITIES_AVAILABLEMEMORY_H |
networker | 0:2b2aa11cebd7 | 5 | #define SEGUNDO_UTILITIES_AVAILABLEMEMORY_H |
networker | 0:2b2aa11cebd7 | 6 | |
networker | 0:2b2aa11cebd7 | 7 | /** |
networker | 0:2b2aa11cebd7 | 8 | * Segundo Equipo |
networker | 0:2b2aa11cebd7 | 9 | */ |
networker | 0:2b2aa11cebd7 | 10 | namespace segundo { |
networker | 0:2b2aa11cebd7 | 11 | /** |
networker | 0:2b2aa11cebd7 | 12 | * A collection of utilities |
networker | 0:2b2aa11cebd7 | 13 | */ |
networker | 0:2b2aa11cebd7 | 14 | namespace Utilities { |
networker | 0:2b2aa11cebd7 | 15 | |
networker | 0:2b2aa11cebd7 | 16 | /** Return the memory available for a malloc call. |
networker | 0:2b2aa11cebd7 | 17 | * This is done by a binary search approach |
networker | 0:2b2aa11cebd7 | 18 | * calling malloc/free starting with a maximum. |
networker | 0:2b2aa11cebd7 | 19 | * |
networker | 0:2b2aa11cebd7 | 20 | * Example: |
networker | 0:2b2aa11cebd7 | 21 | * @code |
networker | 0:2b2aa11cebd7 | 22 | * #include <stdio.h> |
networker | 0:2b2aa11cebd7 | 23 | * #include "AvailableMemory.h" |
networker | 0:2b2aa11cebd7 | 24 | * |
networker | 0:2b2aa11cebd7 | 25 | * int main() { |
networker | 0:2b2aa11cebd7 | 26 | * |
networker | 0:2b2aa11cebd7 | 27 | * printf("Available memory (bytes to nearest 256) : %d\n", AvailableMemory()); |
networker | 0:2b2aa11cebd7 | 28 | * printf("Available memory (exact bytes) : %d\n", AvailableMemory(1)); |
networker | 0:2b2aa11cebd7 | 29 | * |
networker | 0:2b2aa11cebd7 | 30 | * } |
networker | 0:2b2aa11cebd7 | 31 | * @endcode |
networker | 0:2b2aa11cebd7 | 32 | * @param resolution Resolution in number of bytes, |
networker | 0:2b2aa11cebd7 | 33 | * 1 will return the exact value, |
networker | 0:2b2aa11cebd7 | 34 | * default will return the available memory to the nearest 256 bytes |
networker | 0:2b2aa11cebd7 | 35 | * @param maximum Maximum amount of memory to check, default is 32K (0x8000) |
networker | 0:2b2aa11cebd7 | 36 | * @param disableInterrupts Disable interrupts whilst checking, default is true |
networker | 0:2b2aa11cebd7 | 37 | * @return Available memory in bytes accurate to within resolution |
networker | 0:2b2aa11cebd7 | 38 | */ |
networker | 0:2b2aa11cebd7 | 39 | int AvailableMemory(int resolution = 256, int maximum = 0x8000, bool disableInterrupts = true); |
networker | 0:2b2aa11cebd7 | 40 | |
networker | 0:2b2aa11cebd7 | 41 | } // namespace Utilities |
networker | 0:2b2aa11cebd7 | 42 | } // namespace segundo |
networker | 0:2b2aa11cebd7 | 43 | |
networker | 0:2b2aa11cebd7 | 44 | using namespace segundo::Utilities; |
networker | 0:2b2aa11cebd7 | 45 | |
networker | 0:2b2aa11cebd7 | 46 | #endif // SEGUNDO_UTILITIES_AVAILABLEMEMORY_H |