Getting memory usage (e.g. in examples) fails on macOS

[rburing]

Examples are doing this:

flint/examples/bernoulli.c

Line 40 in 39f5c58

SHOW_MEMORY_USAGE

which is implemented like this:

flint/src/profiler.h

Lines 270 to 277 in 39f5c58

	#define SHOW_MEMORY_USAGE \
	do { \
	meminfo_t meminfo; \
	get_memory_usage(meminfo); \
	flint_printf("virt/peak/res/peak(MB): %.2f %.2f %.2f %.2f\n", \
	meminfo->size / 1024.0, meminfo->peak / 1024.0, \
	meminfo->rss / 1024.0, meminfo->hwm / 1024.0); \
	} while (0);

which calls this:

flint/src/generic_files/profiler.c

Lines 105 to 112 in 39f5c58

	void get_memory_usage(meminfo_t meminfo)
	{
	FILE * file = fopen("/proc/self/status", "r");
	ulong result;
	char line[128];
	while (fgets(line, 128, file) != NULL)

but /proc/ doesn't exist on macOS.

[albinahlback]

I think this is Linux and perhaps (non macOS) BSD specific.

[albinahlback]

I think this has been raised before by Hartmut.

[edgarcosta]

Can one use rusage?

[albinahlback]

https://github.com/dhull/rusage/blob/master/rusage.c

[edgarcosta]

I meant https://man7.org/linux/man-pages/man2/getrusage.2.html