core_portme.c

Summary
core_portme.c
portable_mallocProvide malloc() functionality in a platform specific way.
portable_freeProvide free() functionality in a platform specific way.
TIMER_RES_DIVIDERDivider to trade off timer resolution and total time that can be measured.
start_timeThis function will be called right before starting the timed portion of the benchmark.
stop_timeThis function will be called right after ending the timed portion of the benchmark.
get_timeReturn an abstract “ticks” number that signifies time on the system.
time_in_secsConvert the value returned by get_time to seconds.
portable_initTarget specific initialization code Test for some common mistakes.
portable_finiTarget specific final code
core_start_parallelStart benchmarking in a parallel context.
core_stop_parallelStop a parallel context execution of coremark, and gather the results.

portable_malloc

void *portable_malloc(size_t size)

Provide malloc() functionality in a platform specific way.

portable_free

void portable_free(void *p)

Provide free() functionality in a platform specific way.

TIMER_RES_DIVIDER

Divider to trade off timer resolution and total time that can be measured.

Use lower values to increase resolution, but make sure that overflow does not occur.  If there are issues with the return value overflowing, increase this value.

start_time

void start_time(void)

This function will be called right before starting the timed portion of the benchmark.

Implementation may be capturing a system timer (as implemented in the example code) or zeroing some system parameters - e.g. setting the cpu clocks cycles to 0.

stop_time

void stop_time(void)

This function will be called right after ending the timed portion of the benchmark.

Implementation may be capturing a system timer (as implemented in the example code) or other system parameters - e.g. reading the current value of cpu cycles counter.

get_time

CORE_TICKS get_time(void)

Return an abstract “ticks” number that signifies time on the system.

Actual value returned may be cpu cycles, milliseconds or any other value, as long as it can be converted to seconds by time_in_secs.  This methodology is taken to accomodate any hardware or simulated platform.  The sample implementation returns millisecs by default, and the resolution is controlled by TIMER_RES_DIVIDER

time_in_secs

secs_ret time_in_secs(CORE_TICKS ticks)

Convert the value returned by get_time to seconds.

The secs_ret type is used to accomodate systems with no support for floating point.  Default implementation implemented by the EE_TICKS_PER_SEC macro above.

portable_init

void portable_init(core_portable *p,
int *argc,
char *argv[])

Target specific initialization code Test for some common mistakes.

portable_fini

void portable_fini(core_portable *p)

Target specific final code

core_start_parallel

Start benchmarking in a parallel context.

Three implementations are provided, one using pthreads, one using fork and shared mem, and one using fork and sockets.  Other implementations using MCAPI or other standards can easily be devised.

core_stop_parallel

Stop a parallel context execution of coremark, and gather the results.

Three implementations are provided, one using pthreads, one using fork and shared mem, and one using fork and sockets.  Other implementations using MCAPI or other standards can easily be devised.

void *portable_malloc(size_t size)
Provide malloc() functionality in a platform specific way.
void portable_free(void *p)
Provide free() functionality in a platform specific way.
void start_time(void)
This function will be called right before starting the timed portion of the benchmark.
void stop_time(void)
This function will be called right after ending the timed portion of the benchmark.
CORE_TICKS get_time(void)
Return an abstract “ticks” number that signifies time on the system.
secs_ret time_in_secs(CORE_TICKS ticks)
Convert the value returned by get_time to seconds.
void portable_init(core_portable *p,
int *argc,
char *argv[])
Target specific initialization code Test for some common mistakes.
void portable_fini(core_portable *p)
Target specific final code
Divider to trade off timer resolution and total time that can be measured.
For machines that have floating point support, get number of seconds as a double.
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