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