From e16866e072f94410321d70daedbcb855ea878cac Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 6 Nov 2011 15:56:40 -0600 Subject: Actually move the kde files that were renamed in the last commit --- tdecore/tests/kmemtest.cpp | 248 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 248 insertions(+) create mode 100644 tdecore/tests/kmemtest.cpp (limited to 'tdecore/tests/kmemtest.cpp') diff --git a/tdecore/tests/kmemtest.cpp b/tdecore/tests/kmemtest.cpp new file mode 100644 index 000000000..83c452e50 --- /dev/null +++ b/tdecore/tests/kmemtest.cpp @@ -0,0 +1,248 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +void showMem() +{ + char buf[257]; + + printf("Reported Memory Usage Of This Process:\n"); + + FILE *fs = fopen("/proc/self/status", "r"); + bool done = false; + while (!done) + { + fgets(buf, 256, fs); + buf[256] = 0; + if ((strncmp(buf, "VmLib", 5)==0) || + (strncmp(buf, "VmData", 6)==0) || + (strncmp(buf, "VmSize", 6)==0) || + (strncmp(buf, "VmExe", 5)==0) || + (strncmp(buf, "VmRSS", 5)==0) || + (strncmp(buf, "VmLck", 5)==0)) + printf("%s", buf); + done = (strncmp(buf, "VmLib", 5) == 0); + } + fclose(fs); +} + +long showTotalMem() +{ + long realMem = 0; + char buf[257]; + + FILE *fs = fopen("/proc/meminfo", "r"); + bool done = false; + while (!done) + { + fgets(buf, 256, fs); + buf[256] = 0; + if (strlen(buf)==0) done = true; + if (strncmp(buf, "Mem:", 4)==0) + { + long total = 0; + long used = 0; + long free = 0; + long shared = 0; + long buffers = 0; + long cached = 0; + sscanf(buf, "Mem: %ld %ld %ld %ld %ld %ld", + &total, &used, &free, &shared, &buffers, &cached); + realMem = used-buffers-cached; + printf("Actual Total Memory Usage: %0.1fKb\n", realMem/1024.0); + done = true; + } + } + fclose(fs); + return realMem; +} + +long memSize() +{ + long realMem = 0; + char buf[257]; + + FILE *fs = fopen("/proc/meminfo", "r"); + bool done = false; + while (!done) + { + fgets(buf, 256, fs); + buf[256] = 0; + if (strlen(buf)==0) done = true; + if (strncmp(buf, "Mem:", 4)==0) + { + long total = 0; + long used = 0; + long free = 0; + long shared = 0; + long buffers = 0; + long cached = 0; + sscanf(buf, "Mem: %ld %ld %ld %ld %ld %ld", + &total, &used, &free, &shared, &buffers, &cached); + realMem = total; + done = true; + } + } + fclose(fs); + return realMem; +} + +void *mmapFile(const char *file) +{ + int fd = open(file, O_RDONLY); + if (fd == 0) + { + printf("open: %s\n", strerror(errno)); + exit(-1); + } + + struct stat stat_s; + int result = fstat(fd, &stat_s); + if (result) + { + printf("stat: %s\n", strerror(errno)); + exit(-1); + } + + void *ptr = mmap(0, stat_s.st_size, PROT_READ, MAP_SHARED, fd, 0); + if (ptr == 0) + { + printf("mmap: %s\n", strerror(errno)); + exit(-1); + } + return ptr; +} + +int main(int argc, char *argv[]) +{ + if ((argc==2) && (strcmp(argv[1], "all")==0)) + { + long mem_size = memSize(); + mem_size += mem_size / 16; + printf("Malloc... %0.1fMb\n", mem_size/(1024.0*1024.0)); + char *mem = (char *) malloc(mem_size); + for(long i=0; i < mem_size; i+=1024) + { + mem[i] = 99; + } + printf("Done!\n"); + exit(1); + } + + if ((argc==3) && (strcmp(argv[1], "calc")==0)) + { + char buf[257]; + int total = 0; + long val; + while(true) + { + buf[0] = 0; + fgets(buf, sizeof(buf), stdin); + if (!strlen(buf)) + { + printf("%s total = %0.1fKb (%d bytes)\n", argv[2], total/1024.0, total); + exit(1); + } + sscanf(buf, "%lx", &val); + total += val; +// printf("Val = %ld\n", val); + } + exit(1); + } + + + if ((argc>=2) && (strcmp(argv[1], "launch")==0)) + { + showMem(); + + char buf[200]; + + if (argc >=3) + snprintf(buf, 200, "%s &", argv[2]); + else + snprintf(buf, 200, "%s &", argv[0]); + + printf("Waiting for memory usage to settle down....\n"); + long prev = showTotalMem(); + long diff = 0; + do { + sleep(15); + long next = showTotalMem(); + if (next > prev) + diff = next - prev; + else + diff = prev-next; + prev = next; + } + while (diff > 2*1024); + + for(int i=0; i < 5; i++) + { + printf("Launching #%d\n", i); + system(buf); + sleep(2); + } + + sleep(10); + printf("Waiting for memory usage to settle down....\n"); + prev = showTotalMem(); + diff = 0; + do { + sleep(15); + long next = showTotalMem(); + if (next > prev) + diff = next - prev; + else + diff = prev-next; + prev = next; + } + while (diff > 2*1024); + long fiveMem = prev; + + for(int i=5; i < 15; i++) + { + printf("Launching #%d\n", i); + system(buf); + sleep(2); + } + + sleep(10); + printf("Waiting for memory usage to settle down....\n"); + prev = showTotalMem(); + diff = 0; + do { + sleep(15); + long next = showTotalMem(); + if (next > prev) + diff = next - prev; + else + diff = prev-next; + prev = next; + } + while (diff > 2*1024); + long fifteenMem = prev; + showMem(); + + printf("Actual memory usage of 1 instance = %0.1f Kb\n", + (fifteenMem - fiveMem) /10240.0); + } +// showMem("second"); + + KApplication app(argc,argv,"kurltest"); + +// showMem("After KApplication constructor"); + +// malloc(10*1024); + +// showMem("After 10K malloc"); + + printf("Sleeping...\n"); + sleep(8000); +} -- cgit v1.2.1