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