Platform-specific code for macOS. Everything in this module, including the headers, is wrapped in the following preprocessor macro
#if defined(__APPLE__) || defined(__MACH__) /* ... code ... */ #endif /* defined(__APPLE__) || defined(__MACH__) */
ProcessData is a struct that tracks cpu and memory usage of a process. It needs to be regularly updated with calls to update_process()
in order to provide accurate information
typedef struct { double total_user_time; double total_kernel_time; double last_total_consumed; double percent_cpu; uint64_t virtual_memory; uint64_t resident_memory; time_t timestamp; time_t last_timestamp; } ProcessData;
Returns a pointer to a ProcessData
struct.
ProcessData *new_ProcessData();
Updates a ProcessData
struct. This should be called in a loop or at specific intervals to measure proper usage data. An example is below
int update_process(pid_t pid, ProcessData *proc); /* Example */ pid_t pid = getpid(); ProcessData *pd = new_ProcessData(); for (int i = 0; i < 10; i++) { update_process(pid, pd); printf("CPU: %.2f\n", pd->percent_cpu); sleep(1); } free(pd);