Module libuv::misc

Re-exports

• pub use os::*;

Modules

• os

Structs

• CpuInfo
  Data type for CPU information.
• ResourceUsage
  Data type for resource usage results.
• TimeSpec64
  Y2K38-safe data type for storing times with nanosecond resolution.
• TimeVal
  Data type for storing times.

Enums

• ClockId
  Clock source for clock_gettime().

Functions

• clock_gettime
  Obtain the current system time from a high-resolution real-time or monotonic clock source.
• cpu_info
  Gets information about the CPUs on the system.
• cpumask_size
  Returns the maximum size of the mask used for process/thread affinities, or ENOTSUP if affinities are not supported on the current platform.
• get_available_memory
  Gets the amount of free memory that is still available to the process (in bytes). This differs from get_free_memory() in that it takes into account any limits imposed by the OS. If there is no such constraint, or the constraint is unknown, the amount returned will be identical to get_free_memory().
• get_constrained_memory
  Gets the total amount of memory available to the process (in bytes) based on limits imposed by the OS. If there is no such constraint, or the constraint is unknown, 0 is returned. If there is a constraining mechanism, but there is no constraint set, UINT64_MAX is returned. Note that it is not unusual for this value to be less than or greater than get_total_memory().
• get_free_memory
  Gets the amount of free memory available in the system, as reported by the kernel (in bytes). Returns 0 when unknown.
• get_process_title
  Gets the title of the current process. You must call setup_args before calling this function on Unix and AIX systems. If setup_args has not been called on systems that require it, then ENOBUFS is returned.
• get_total_memory
  Gets the total amount of physical memory in the system (in bytes). Returns 0 when unknown.
• getrusage
  Gets the resource usage measures for the current process.
• gettimeofday
  Cross-platform implementation of gettimeofday(2). The timezone argument to gettimeofday() is not supported, as it is considered obsolete.
• hrtime
  Returns the current high-resolution timestamp. This is expressed in nanoseconds. It is relative to an arbitrary time in the past. It is not related to the time of day and therefore not subject to clock drift. The primary use is for measuring performance between intervals.
• loadavg
  Gets the load average. See: https://en.wikipedia.org/wiki/Load_(computing)
• resident_set_memory
  Gets the resident set size (RSS) for the current process.
• set_process_title
  Sets the current process title. You must call setup_args before calling this function on Unix and AIX systems. If setup_args has not been called on systems that require it, then ENOBUFS is returned. On platforms with a fixed size buffer for the process title the contents of title will be copied to the buffer and truncated if larger than the available space. Other platforms will return ENOMEM if they cannot allocate enough space to duplicate the contents of title.
• setup_args
  Store the program arguments. Required for getting / setting the process title or the executable path. Libuv may take ownership of the memory that argv points to. This function should be called exactly once, at program start-up.
• shutdown
  Release any global state that libuv is holding onto. Libuv will normally do so automatically when it is unloaded but it can be instructed to perform cleanup manually.
• sleep
  Causes the calling thread to sleep for msec milliseconds.
• uptime
  Gets the current system uptime. Depending on the system full or fractional seconds are returned.