a1636b85b7
it does this by
- making all processes interruptible by running out of quantum
- giving all processes a single tick of quantum
- picking a random runnable process instead of in order, and
from a single pool of runnable processes (no priorities)
This together with very high HZ values currently provokes some race conditions
seen earlier only when running with SMP.
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
#ifndef DEBUG_H
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#define DEBUG_H
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/* This header file defines all debugging constants and macros, and declares
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* some variables. Certain debugging features redefine standard constants
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* and macros. Therefore, this header file should be included after the
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* other kernel headers.
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*/
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#include <ansi.h>
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#include <minix/debug.h>
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#include "config.h"
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/* Enable prints such as
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* . send/receive failed due to deadlock or dead source or dead destination
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* . trap not allowed
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* . bogus message pointer
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* . kernel call number not allowed by this process
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*
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* Of course the call still fails, but nothing is printed if these warnings
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* are disabled.
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*/
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#define DEBUG_ENABLE_IPC_WARNINGS 1
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#define DEBUG_STACKTRACE 1
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#define DEBUG_TIME_LOCKS 1
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/* Sanity checks. */
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#define DEBUG_SANITYCHECKS 0
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/* Verbose messages. */
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#define DEBUG_TRACE 0
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/* DEBUG_RACE makes every process preemptible, schedules
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* every process on the same priority queue, and randomizes
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* the next process to run, in order to help catch race
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* conditions that could otherwise be masked.
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*/
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#define DEBUG_RACE 0
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#if DEBUG_TRACE
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#define VF_SCHEDULING (1L << 1)
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#define VF_PICKPROC (1L << 2)
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#define TRACE(code, statement) if(verboseflags & code) { printf("%s:%d: ", __FILE__, __LINE__); statement }
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#else
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#define TRACE(code, statement)
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#endif
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#define NOT_REACHABLE do { \
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panic("NOT_REACHABLE at %s:%d", __FILE__, __LINE__); \
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for(;;); \
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} while(0)
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#define NOT_IMPLEMENTED do { \
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panic("NOT_IMPLEMENTED at %s:%d", __FILE__, __LINE__); \
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} while(0)
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#ifdef CONFIG_BOOT_VERBOSE
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#define BOOT_VERBOSE(x) x
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#else
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#define BOOT_VERBOSE(x)
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#endif
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#ifdef _SYSTEM
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#define DEBUG_PRINT(params, level) do { \
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if (verboseboot >= (level)) printf params; } while (0)
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#define DEBUGBASIC(params) DEBUG_PRINT(params, VERBOSEBOOT_BASIC)
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#define DEBUGMAX(params) DEBUG_PRINT(params, VERBOSEBOOT_MAX)
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#endif
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#endif /* DEBUG_H */
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