scheduler.h

Include dependency graph for scheduler.h:

digraph {
    graph [bgcolor="#00000000"]
    node [shape=rectangle style=filled fillcolor="#FFFFFF" font=Helvetica padding=2]
    edge [color="#1414CE"]
    "8" [label="stdbool.h" tooltip="stdbool.h"]
    "24" [label="refc_binary.h" tooltip="refc_binary.h"]
    "5" [label="atom.h" tooltip="atom.h"]
    "11" [label="assert.h" tooltip="assert.h"]
    "22" [label="utils.h" tooltip="utils.h"]
    "16" [label="synclist.h" tooltip="synclist.h"]
    "15" [label="list.h" tooltip="list.h"]
    "4" [label="stdint.h" tooltip="stdint.h"]
    "6" [label="stdlib.h" tooltip="stdlib.h"]
    "2" [label="context.h" tooltip="context.h"]
    "21" [label="memory.h" tooltip="memory.h"]
    "25" [label="resources.h" tooltip="resources.h"]
    "19" [label="term.h" tooltip="term.h"]
    "23" [label="stddef.h" tooltip="stddef.h"]
    "9" [label="erl_nif.h" tooltip="erl_nif.h"]
    "12" [label="limits.h" tooltip="limits.h"]
    "7" [label="atom_table.h" tooltip="atom_table.h"]
    "20" [label="string.h" tooltip="string.h"]
    "10" [label="term_typedef.h" tooltip="term_typedef.h"]
    "3" [label="globalcontext.h" tooltip="globalcontext.h"]
    "1" [label="/__w/AtomVM/AtomVM/src/libAtomVM/scheduler.h" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/scheduler.h" fillcolor="#BFBFBF"]
    "18" [label="smp.h" tooltip="smp.h"]
    "27" [label="timer_list.h" tooltip="timer_list.h"]
    "26" [label="mailbox.h" tooltip="mailbox.h"]
    "17" [label="stdio.h" tooltip="stdio.h"]
    "14" [label="ets.h" tooltip="ets.h"]
    "13" [label="inttypes.h" tooltip="inttypes.h"]
    "24" -> "8" [dir=forward tooltip="include"]
    "24" -> "6" [dir=forward tooltip="include"]
    "24" -> "15" [dir=forward tooltip="include"]
    "24" -> "25" [dir=forward tooltip="include"]
    "5" -> "4" [dir=forward tooltip="include"]
    "5" -> "6" [dir=forward tooltip="include"]
    "22" -> "23" [dir=forward tooltip="include"]
    "22" -> "17" [dir=forward tooltip="include"]
    "22" -> "6" [dir=forward tooltip="include"]
    "16" -> "17" [dir=forward tooltip="include"]
    "16" -> "15" [dir=forward tooltip="include"]
    "16" -> "18" [dir=forward tooltip="include"]
    "15" -> "8" [dir=forward tooltip="include"]
    "2" -> "3" [dir=forward tooltip="include"]
    "2" -> "15" [dir=forward tooltip="include"]
    "2" -> "26" [dir=forward tooltip="include"]
    "2" -> "18" [dir=forward tooltip="include"]
    "2" -> "19" [dir=forward tooltip="include"]
    "2" -> "27" [dir=forward tooltip="include"]
    "21" -> "4" [dir=forward tooltip="include"]
    "21" -> "6" [dir=forward tooltip="include"]
    "21" -> "9" [dir=forward tooltip="include"]
    "21" -> "10" [dir=forward tooltip="include"]
    "21" -> "22" [dir=forward tooltip="include"]
    "25" -> "6" [dir=forward tooltip="include"]
    "25" -> "9" [dir=forward tooltip="include"]
    "25" -> "15" [dir=forward tooltip="include"]
    "25" -> "21" [dir=forward tooltip="include"]
    "19" -> "8" [dir=forward tooltip="include"]
    "19" -> "4" [dir=forward tooltip="include"]
    "19" -> "17" [dir=forward tooltip="include"]
    "19" -> "6" [dir=forward tooltip="include"]
    "19" -> "20" [dir=forward tooltip="include"]
    "19" -> "21" [dir=forward tooltip="include"]
    "19" -> "24" [dir=forward tooltip="include"]
    "19" -> "22" [dir=forward tooltip="include"]
    "19" -> "10" [dir=forward tooltip="include"]
    "9" -> "10" [dir=forward tooltip="include"]
    "7" -> "8" [dir=forward tooltip="include"]
    "7" -> "5" [dir=forward tooltip="include"]
    "10" -> "11" [dir=forward tooltip="include"]
    "10" -> "12" [dir=forward tooltip="include"]
    "10" -> "13" [dir=forward tooltip="include"]
    "10" -> "4" [dir=forward tooltip="include"]
    "3" -> "4" [dir=forward tooltip="include"]
    "3" -> "5" [dir=forward tooltip="include"]
    "3" -> "7" [dir=forward tooltip="include"]
    "3" -> "9" [dir=forward tooltip="include"]
    "3" -> "14" [dir=forward tooltip="include"]
    "3" -> "15" [dir=forward tooltip="include"]
    "3" -> "26" [dir=forward tooltip="include"]
    "3" -> "18" [dir=forward tooltip="include"]
    "3" -> "16" [dir=forward tooltip="include"]
    "3" -> "19" [dir=forward tooltip="include"]
    "3" -> "27" [dir=forward tooltip="include"]
    "1" -> "2" [dir=forward tooltip="include"]
    "1" -> "3" [dir=forward tooltip="include"]
    "18" -> "8" [dir=forward tooltip="include"]
    "27" -> "8" [dir=forward tooltip="include"]
    "27" -> "4" [dir=forward tooltip="include"]
    "27" -> "15" [dir=forward tooltip="include"]
    "26" -> "8" [dir=forward tooltip="include"]
    "26" -> "15" [dir=forward tooltip="include"]
    "26" -> "10" [dir=forward tooltip="include"]
    "26" -> "22" [dir=forward tooltip="include"]
    "14" -> "15" [dir=forward tooltip="include"]
    "14" -> "16" [dir=forward tooltip="include"]
    "14" -> "19" [dir=forward tooltip="include"]
}

This graph shows which files directly or indirectly include scheduler.h:

digraph {
    graph [bgcolor="#00000000"]
    node [shape=rectangle style=filled fillcolor="#FFFFFF" font=Helvetica padding=2]
    edge [color="#1414CE"]
    "4" [label="/__w/AtomVM/AtomVM/src/libAtomVM/nifs.c" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/nifs.c"]
    "2" [label="/__w/AtomVM/AtomVM/src/libAtomVM/globalcontext.c" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/globalcontext.c"]
    "1" [label="/__w/AtomVM/AtomVM/src/libAtomVM/scheduler.h" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/scheduler.h" fillcolor="#BFBFBF"]
    "5" [label="/__w/AtomVM/AtomVM/src/libAtomVM/otp_socket.c" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/otp_socket.c"]
    "3" [label="/__w/AtomVM/AtomVM/src/libAtomVM/mailbox.c" tooltip="/__w/AtomVM/AtomVM/src/libAtomVM/mailbox.c"]
    "1" -> "2" [dir=back tooltip="include"]
    "1" -> "3" [dir=back tooltip="include"]
    "1" -> "4" [dir=back tooltip="include"]
    "1" -> "5" [dir=back tooltip="include"]
}

Scheduling functions.

Scheduling functions are used to schedule processes.

Defines

DEFAULT_REDUCTIONS_AMOUNT 1024

Functions

Context *scheduler_run(GlobalContext *global)

run the scheduler and return a process to be executed.

Parameters:
  • global – the global context.

Context *scheduler_wait(Context *c)

move a process to waiting queue and wait a ready one

move current process to the waiting queue, and schedule the next one or sleep until an event is received.

Parameters:
  • c – the process context.

void scheduler_init_ready(Context *c)

Init a process in the ready state, moving it to the scheduler queue.

Parameters:
  • c – the process context.

void scheduler_signal_message(Context *c)

Signal a process that a message was inserted in the mailbox.

Cannot be called from a foreign task or from ISR.

Parameters:
  • c – the process context.

void scheduler_signal_message_from_task(Context *c)

Signal a process that a message was inserted in the mailbox.

Must only be called while global->processes_spinlock is acquired.

Parameters:
  • c – the process context.

void scheduler_kill(Context *ctx)

Signal a process that it was killed.

Parameters:
  • ctx – the process context.

void scheduler_terminate(Context *c)

removes a process and terminates it from the scheduling queue

removes a process from the scheduling ready queue and destroys it if its not a leader process.

Parameters:
  • c – the process that is going to be terminated.

void scheduler_stop_all(GlobalContext *global)

Terminate all schedulers. Every process is terminated gracefully at next scheduling point.

Parameters:
  • global – the global context.

Context *scheduler_next(GlobalContext *global, Context *c)

gets next runnable process from the ready queue.

gets next runnable process from the ready queue, it may return current process if there isn’t any other runnable process.

Parameters:
  • global – the global context.

  • c – the current process.

Returns:

runnable process.

void scheduler_set_timeout(Context *ctx, avm_int64_t timeout)

sets context timeout

set context timeout timestamp, move context to wait queue and update global next timeout timestamp.

Parameters:
  • ctx – the context that will be put on sleep

  • timeout – amount of time to be waited in milliseconds.

void scheduler_cancel_timeout(Context *ctx)
int scheduler_entry_point(GlobalContext *glb)

Entry point for schedulers.

Parameters:
  • glb – the global context.