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1 | #ifndef STATE_H |
2 | #define STATE_H |
3 | |
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4 | #include <glib.h> |
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5 | #include <lttv/processTrace.h> |
6 | |
7 | /* The operating system state kept during the trace analysis |
8 | contains a subset of the real operating system state, |
9 | sufficient for the analysis, and possibly organized quite differently. |
10 | |
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11 | The state information is added to LttvTracesetContext, LttvTraceContext |
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12 | and LttvTracefileContext objects, used by processTrace, through |
13 | subtyping. The context objects already reflect the multiple tracefiles |
14 | (one per cpu) per trace and multiple traces per trace set. The state |
15 | objects defined here simply add fields to the relevant context objects. */ |
16 | |
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17 | typedef struct _LttvTracesetState LttvTracesetState; |
18 | typedef struct _LttvTracesetStateClass LttvTracesetStateClass; |
19 | |
20 | typedef struct _LttvTraceState LttvTraceState; |
21 | typedef struct _LttvTraceStateClass LttvTraceStateClass; |
22 | |
23 | typedef struct _LttvTracefileState LttvTracefileState; |
24 | typedef struct _LttvTracefileStateClass LttvTracefileStateClass; |
25 | |
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26 | gboolean lttv_state_add_event_hooks(LttvTracesetState *self); |
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27 | |
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28 | gboolean lttv_state_remove_event_hooks(LttvTracesetState *self); |
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29 | |
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30 | /* The LttvProcessState structure defines the current state for each process. |
31 | A process can make system calls (in some rare cases nested) and receive |
32 | interrupts/faults. For instance, a process may issue a system call, |
33 | generate a page fault while reading an argument from user space, and |
34 | get caught by an interrupt. To represent these nested states, an |
35 | execution mode stack is maintained. The stack bottom is normal user mode |
36 | and the top of stack is the current execution mode. |
37 | |
38 | The execution mode stack tells about the process status, execution mode and |
39 | submode (interrupt, system call or IRQ number). All these could be |
40 | defined as enumerations but may need extensions (e.g. new process state). |
41 | GQuark are thus used. They are as easy to manipulate as integers but have |
42 | a string associated, just like enumerations. |
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43 | |
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44 | The execution mode is one of "user mode", "kernel thread", "system call", |
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45 | "interrupt request", "fault". */ |
46 | |
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47 | typedef GQuark LttvExecutionMode; |
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48 | |
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49 | extern LttvExecutionMode |
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50 | LTTV_STATE_USER_MODE, |
51 | LTTV_STATE_SYSCALL, |
52 | LTTV_STATE_TRAP, |
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53 | LTTV_STATE_IRQ, |
54 | LTTV_STATE_MODE_UNKNOWN; |
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55 | |
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56 | |
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57 | /* The submode number depends on the execution mode. For user mode or kernel |
58 | thread, which are the normal mode (execution mode stack bottom), |
59 | it is set to "none". For interrupt requests, faults and system calls, |
60 | it is set respectively to the interrupt name (e.g. "timer"), fault name |
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61 | (e.g. "page fault"), and system call name (e.g. "select"). */ |
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62 | |
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63 | typedef GQuark LttvExecutionSubmode; |
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64 | |
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65 | extern LttvExecutionSubmode |
66 | LTTV_STATE_SUBMODE_NONE, |
67 | LTTV_STATE_SUBMODE_UNKNOWN; |
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68 | |
69 | /* The process status is one of "running", "wait-cpu" (runnable), or "wait-*" |
70 | where "*" describes the resource waited for (e.g. timer, process, |
71 | disk...). */ |
72 | |
73 | typedef GQuark LttvProcessStatus; |
74 | |
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75 | extern LttvProcessStatus |
76 | LTTV_STATE_UNNAMED, |
77 | LTTV_STATE_WAIT_FORK, |
78 | LTTV_STATE_WAIT_CPU, |
79 | LTTV_STATE_EXIT, |
80 | LTTV_STATE_WAIT, |
81 | LTTV_STATE_RUN; |
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82 | |
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83 | |
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84 | typedef struct _LttvExecutionState { |
85 | LttvExecutionMode t; |
86 | LttvExecutionSubmode n; |
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87 | LttTime entry; |
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88 | LttTime change; |
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89 | LttvProcessStatus s; |
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90 | } LttvExecutionState; |
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91 | |
92 | |
93 | typedef struct _LttvProcessState { |
94 | guint pid; |
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95 | guint ppid; |
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96 | LttTime creation_time; |
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97 | GQuark name; |
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98 | GQuark pid_time; |
99 | GArray *execution_stack; /* Array of LttvExecutionState */ |
100 | LttvExecutionState *state; /* Top of interrupt stack */ |
101 | /* opened file descriptors, address map?... */ |
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102 | } LttvProcessState; |
103 | |
104 | |
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105 | LttvProcessState *lttv_state_find_process(LttvTracefileState *tfs, guint pid); |
106 | |
107 | |
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108 | /* The LttvTracesetState, LttvTraceState and LttvTracefileState types |
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109 | inherit from the corresponding Context objects defined in processTrace. */ |
110 | |
111 | #define LTTV_TRACESET_STATE_TYPE (lttv_traceset_state_get_type ()) |
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112 | #define LTTV_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_STATE_TYPE, LttvTracesetState)) |
113 | #define LTTV_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass)) |
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114 | #define LTTV_IS_TRACESET_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_STATE_TYPE)) |
115 | #define LTTV_IS_TRACESET_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_STATE_TYPE)) |
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116 | #define LTTV_TRACESET_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_STATE_TYPE, LttvTracesetStateClass)) |
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117 | |
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118 | struct _LttvTracesetState { |
119 | LttvTracesetContext parent; |
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120 | }; |
121 | |
122 | struct _LttvTracesetStateClass { |
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123 | LttvTracesetContextClass parent; |
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124 | }; |
125 | |
126 | GType lttv_traceset_state_get_type (void); |
127 | |
128 | |
129 | #define LTTV_TRACE_STATE_TYPE (lttv_trace_state_get_type ()) |
130 | #define LTTV_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_STATE_TYPE, LttvTraceState)) |
131 | #define LTTV_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass)) |
132 | #define LTTV_IS_TRACE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_STATE_TYPE)) |
133 | #define LTTV_IS_TRACE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_STATE_TYPE)) |
134 | #define LTTV_TRACE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_STATE_TYPE, LttvTraceStateClass)) |
135 | |
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136 | struct _LttvTraceState { |
137 | LttvTraceContext parent; |
138 | |
139 | GHashTable *processes; /* LttvProcessState objects indexed by pid */ |
140 | /* Block/char devices, locks, memory pages... */ |
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141 | GQuark *eventtype_names; |
142 | GQuark *syscall_names; |
143 | GQuark *trap_names; |
144 | GQuark *irq_names; |
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145 | }; |
146 | |
147 | struct _LttvTraceStateClass { |
148 | LttvTraceContextClass parent; |
149 | }; |
150 | |
151 | GType lttv_trace_state_get_type (void); |
152 | |
153 | |
154 | #define LTTV_TRACEFILE_STATE_TYPE (lttv_tracefile_state_get_type ()) |
155 | #define LTTV_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileState)) |
156 | #define LTTV_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass)) |
157 | #define LTTV_IS_TRACEFILE_STATE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_STATE_TYPE)) |
158 | #define LTTV_IS_TRACEFILE_STATE_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_STATE_TYPE)) |
159 | #define LTTV_TRACEFILE_STATE_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_STATE_TYPE, LttvTracefileStateClass)) |
160 | |
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161 | struct _LttvTracefileState { |
162 | LttvTracefileContext parent; |
163 | |
164 | LttvProcessState *process; |
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165 | GQuark cpu_name; |
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166 | }; |
167 | |
168 | struct _LttvTracefileStateClass { |
169 | LttvTracefileContextClass parent; |
170 | }; |
171 | |
172 | GType lttv_tracefile_state_get_type (void); |
173 | |
174 | |
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175 | #endif // STATE_H |