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148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/*
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* This file is part of mtrace.
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* Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
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* This file is based on the ltrace source
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*
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* This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef _INC_TASK_H
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#define _INC_TASK_H
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#include "config.h"
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#include <sys/time.h>
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#include "forward.h"
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#include "mtrace.h"
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#include "dict.h"
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#include "event.h"
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#include "sysdep.h"
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#include "arch.h"
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#include "list.h"
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#include "rbtree.h"
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#include "report.h"
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struct task {
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struct rb_node pid_node; /* red/black tree node for fast pid -> struct task */
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pid_t pid;
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unsigned int stopped:1;
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unsigned int traced:1;
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unsigned int was_stopped:1;
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unsigned int is_64bit:1;
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unsigned int attached:1;
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/* Dictionary of breakpoints */
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struct dict *breakpoints;
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struct library_symbol *libsym;
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struct context context; /* process context (registers, stack) */
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struct context saved_context; /* context for fetch_param() */
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struct breakpoint *breakpoint;
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unsigned int threads; /* set in leader: number of threads including the leader */
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unsigned int threads_stopped; /* set in leader: number of stopped threads including the leader */
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/* linked list of libraries, the first entry is the executable itself */
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struct list_head libraries_list;
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void *backtrace;
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/* struct task chaining. */
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struct list_head leader_list;
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/* points to the leader thread of the POSIX.1 task */
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struct task *leader;
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/* Thread chaining to leader */
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struct list_head task_list;
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/* current pendig event */
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struct event event;
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/* pointer to a breakpoint which was interrupt by a signal during skip */
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struct breakpoint *skip_bp;
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/* only used in leader: bit mask for used hw breakpoints */
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unsigned long hw_bp_mask;
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/* array of addresses of hw breakpoints */
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struct breakpoint *hw_bp[HW_BREAKPOINTS];
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/* os specific task data */
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#ifdef OS_HAVE_PROCESS_DATA
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struct os_task_data os;
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#endif
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/* arch specific task data */
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#ifdef TASK_HAVE_PROCESS_DATA
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struct arch_task_data arch;
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#endif
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};
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/* PROC underwent an exec. This is a bit like task_destroy
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* followed by task_init, except that some state is kept and the
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* process doesn't lose it's place in the list of processes. */
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int process_exec(struct task *task);
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struct task *task_new(pid_t pid, int traced);
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struct task *task_create(const char *command, char **argv);
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void open_pid(pid_t pid);
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struct task *pid2task(pid_t pid);
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/* Clone the contents of a task */
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int task_clone(struct task *task, struct task *newtask);
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/* Fork the contents of a task */
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int task_fork(struct task *task, struct task *newtask);
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/* get first process of leader list */
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struct task *get_first_process(void);
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/* Iterate through the leader tasks that mtrace currently traces. */
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void each_process(void (*cb)(struct task *task));
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/* Iterate through list of tasks of a given leader task asks */
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void each_task(struct task *leader, void (*cb)(struct task *task, void *data), void *data);
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/* Iterate through all allocated pids */
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void each_pid(void (*cb)(struct task *task));
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/* Remove task from the list of traced processes, drop any events in the event queue, destroy it and free memory. */
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void remove_task(struct task *task);
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/* Remove all threads of the process from the list of traced processes, drop any events in the event queue, destroy it and free memory. */
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void remove_proc(struct task *leader);
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/* return true if no more task is traced */
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int task_list_empty(void);
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/* return true if task is 64 bit */
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static inline int task_is_64bit(struct task *task)
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{
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return task->is_64bit;
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}
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#endif
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