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Rev | Author | Line No. | Line |
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352 | giacomo | 1 | #include <stdlib.h> |
2 | #include <tracer.h> |
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3 | |||
4 | void *StartTracerBuffer; |
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5 | void *EndTracerBuffer; |
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6 | void *CurrentTracerBuffer; |
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7 | int TracerActive = 0; |
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8 | unsigned long long TracerEventsRecorded; |
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9 | extern unsigned int clk_per_msec; |
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10 | |||
11 | /* Initialize the tracer |
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12 | * |
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13 | * Return 0 => Success |
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14 | * Return 1 => Fail |
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15 | */ |
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16 | int tracer_initialize(int OutputType, int MemorySize) |
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17 | { |
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18 | |||
19 | SYS_FLAGS f; |
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20 | |||
21 | f = ll_fsave(); |
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22 | |||
23 | StartTracerBuffer = malloc(MemorySize); |
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24 | if (!StartTracerBuffer) { |
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25 | ll_frestore(f); |
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26 | return 1; |
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27 | } |
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28 | |||
29 | EndTracerBuffer = StartTracerBuffer + MemorySize - 1; |
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30 | CurrentTracerBuffer = StartTracerBuffer; |
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31 | |||
32 | TracerActive = 0; |
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33 | TracerEventsRecorded = 0; |
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34 | |||
35 | ll_frestore(f); |
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36 | return 0; |
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37 | |||
38 | } |
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39 | |||
40 | void tracer_enable() { |
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41 | |||
42 | SYS_FLAGS f; |
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43 | |||
44 | f = ll_fsave(); |
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45 | |||
46 | TracerActive = 1; |
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47 | |||
48 | ll_frestore(f); |
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49 | |||
50 | } |
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51 | |||
52 | void tracer_disable() { |
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53 | |||
54 | SYS_FLAGS f; |
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55 | |||
56 | f = ll_fsave(); |
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57 | |||
58 | TracerActive = 0; |
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59 | |||
60 | ll_frestore(f); |
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61 | |||
62 | } |
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63 | |||
64 | void tracer_print_statistics() { |
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65 | |||
66 | SYS_FLAGS f; |
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67 | void *p; |
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68 | int i,t,ctx,pid,ctx_current; |
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69 | unsigned long long ck,delta; |
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70 | unsigned long long last_clk; |
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71 | |||
72 | struct exec_proc { |
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73 | int ctx; |
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74 | unsigned long long total_clk; |
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75 | unsigned long long start_clk; |
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76 | }; |
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77 | |||
78 | struct exec_proc *ec; |
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79 | |||
80 | f = ll_fsave(); |
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81 | |||
82 | cprintf("Total Events %d\n",(int)TracerEventsRecorded); |
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83 | |||
84 | for (i=0; i<0xFF; i++) { |
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85 | p = StartTracerBuffer; |
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86 | t = 0; |
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87 | while(p < CurrentTracerBuffer) { |
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88 | if (*(BYTE *)p == i) t++; |
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89 | p += *(BYTE *)(p + 9); |
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90 | } |
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91 | if (t != 0) |
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92 | cprintf("Event type %02x => %d\n",i,t); |
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93 | } |
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94 | |||
95 | ec = malloc(sizeof(struct exec_proc) * MAX_PROC); |
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96 | ctx_current = 0; |
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97 | last_clk = 0; |
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98 | |||
99 | cprintf("Context Switch Analisys\n"); |
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100 | p = StartTracerBuffer; |
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101 | while(p < CurrentTracerBuffer) { |
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102 | pid = *(int *)(p + 10); |
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103 | ctx = *(int *)(p + 14); |
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104 | ck = (unsigned long long)(*(unsigned int *)(p + 1)) << 32; |
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105 | ck |= *(unsigned int *)(p + 5); |
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106 | if (*(BYTE *)p == FTrace_EVT_task_create) { |
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107 | cprintf("Task Create %d %d\n",pid,ctx); |
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108 | ec[pid].ctx = ctx; |
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109 | ec[pid].total_clk = 0; |
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110 | ec[pid].start_clk = ck; |
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111 | } |
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112 | if (*(BYTE *)p == FTrace_EVT_context_switch || |
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113 | *(BYTE *)p == FTrace_EVT_timer_wakeup_end) { |
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114 | ctx = *(int *)(p + 10); |
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115 | if (ctx_current == 0) { |
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116 | ctx_current = ctx; |
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117 | last_clk = ck; |
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118 | } else { |
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119 | delta = ck - last_clk; |
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120 | cprintf("Delta Ctx %d = %d us\n",ctx_current,(int)(delta * 1000000 / clk_per_msec / 1000)); |
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121 | last_clk = ck; |
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122 | ctx_current = ctx; |
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123 | } |
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124 | } |
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125 | p += *(BYTE *)(p + 9); |
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126 | } |
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127 | |||
128 | ll_frestore(f); |
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129 | |||
130 | } |