diff options
Diffstat (limited to 'test/monniaux/multithreaded_volatile')
-rw-r--r-- | test/monniaux/multithreaded_volatile/Makefile | 18 | ||||
-rw-r--r-- | test/monniaux/multithreaded_volatile/volatile.c | 30 |
2 files changed, 48 insertions, 0 deletions
diff --git a/test/monniaux/multithreaded_volatile/Makefile b/test/monniaux/multithreaded_volatile/Makefile new file mode 100644 index 00000000..35717953 --- /dev/null +++ b/test/monniaux/multithreaded_volatile/Makefile @@ -0,0 +1,18 @@ +all: volatile.ccomp.k1c volatile.gcc.k1c + +volatile.ccomp.k1c : volatile.ccomp.k1c.s + k1-cos-gcc $< -o $@ + +volatile.gcc.k1c : volatile.gcc.k1c.s + k1-cos-gcc $< -o $@ + +volatile.ccomp.k1c.s : volatile.c + ../../../ccomp -O2 -Wall -S $< -o $@ + +volatile.gcc.k1c.s : volatile.c + k1-cos-gcc -O2 -Wall -Werror=implicit -std=gnu99 -S $< -o $@ + +clean: + -rm -f *.k1c *.s + +.PHONY: clean diff --git a/test/monniaux/multithreaded_volatile/volatile.c b/test/monniaux/multithreaded_volatile/volatile.c new file mode 100644 index 00000000..f8ffee2d --- /dev/null +++ b/test/monniaux/multithreaded_volatile/volatile.c @@ -0,0 +1,30 @@ +#include <stdio.h> +#include <time.h> +#include <pthread.h> + +typedef unsigned data; + +static inline data powM(data x, unsigned e) { + data y = 1; + for(unsigned i=0; i<e; i++) { + y = (y * x) % 65537; + } + return y; +} + +void* second_thread_entry(void *ptr) { + *((volatile data*) ptr) = powM(3, 65536); + return NULL; +} + +int main() { + pthread_t second_thread_id; + volatile data value; + pthread_create(&second_thread_id, NULL, + second_thread_entry, (void*) &value); + value = 69; + data correct = powM(3, 65536*2); + data read = value; + pthread_join(second_thread_id, NULL); + printf("%u %u %s\n", read, correct, read == correct ? "OK" : "FAIL"); +} |