1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* 
TEST_HEADER
 id = $HopeName:$
 summary = test of ramp allocation with tiny arena
 language = c
 link = testlib.o rankfmt.o
 parameters = ARENA=1024*60
OUTPUT_SPEC
 result = pass
END_HEADER
*/

#include "testlib.h"
#include "mpscamc.h"
#include "mpsavm.h"
#include "rankfmt.h"

#define ARENALIMIT (ARENA)

#define TABSIZE (50000)
#define ENTERRAMP (30000)
#define LEAVERAMP (100000)

#define BACKSIZE (128)
#define BACKITER (32)
#define RAMPSIZE (128)

#define ITERATIONS (1000000ul)

#define RAMP_INTERFACE
/*
#define COLLECT_WORLD
*/

void *stackpointer;

mps_space_t arena;
mps_pool_t poolamc;
mps_thr_t thread;
mps_root_t root, root1;

mps_fmt_t format;
mps_ap_t apamc;

static mps_addr_t objtab[TABSIZE];

static void alloc_back(void) {
 long int i, j;

 for (j = 0; j < BACKITER; j++) {
  i = ranint(ranint(ranint(ranint(TABSIZE)+1)+1)+1);
  objtab[i] = allocdumb(apamc, BACKSIZE, MPS_RANK_EXACT);
 }
}


static void test(void) {
 long int i;
 long int rsize;

 int inramp;

 mycell *r, *s;

 cdie(mps_arena_create(&arena, mps_arena_class_vm(),
   (size_t) ARENALIMIT),
  "create space");

 cdie(mps_thread_reg(&thread, arena), "register thread");

 cdie(
  mps_root_create_reg(&root, arena, MPS_RANK_AMBIG, 0, thread,
   mps_stack_scan_ambig, stackpointer, 0),
  "create root");

 cdie(
  mps_root_create_table(&root1, arena, MPS_RANK_EXACT, 0, &objtab[0], TABSIZE),
  "create root table");

 cdie(
  mps_fmt_create_A(&format, arena, &fmtA),
  "create format");

 cdie(
  mps_pool_create(&poolamc, arena, mps_class_amc(), format),
  "create pool");

 cdie(
  mps_ap_create(&apamc, poolamc, MPS_RANK_EXACT),
  "create ap");

 inramp = 0;

 for (i = 0; i < ITERATIONS; i++) {
  if (i % 10000 == 0) {
   comment("%ld of %ld", i, ITERATIONS);
  }
  alloc_back();
  if (inramp) {
   s = allocone(apamc, 3, MPS_RANK_EXACT);
   setref(r, 0, s);
   setref(s, 1, r);
   r = s;
   s = allocdumb(apamc, RAMPSIZE, MPS_RANK_EXACT);
   setref(r, 2, s);
   rsize ++;
   if (ranint(LEAVERAMP) == 0) {
    r = allocone(apamc, 2, MPS_RANK_EXACT);
    s = allocone(apamc, 2, MPS_RANK_EXACT);
#ifdef RAMP_INTERFACE
    mps_ap_alloc_pattern_end(apamc, mps_alloc_pattern_ramp());
#endif
#ifdef COLLECT_WORLD
    mps_arena_collect(arena);
    mps_arena_release(arena);
#endif
    comment("ramp end, %ld objects", rsize);
    inramp = 0;
   }
  } else {
   if (ranint(ENTERRAMP) == 0) {
#ifdef RAMP_INTERFACE
    mps_ap_alloc_pattern_begin(apamc, mps_alloc_pattern_ramp());
#endif
    comment("ramp begin");
    r = allocone(apamc, 3, MPS_RANK_EXACT);
    inramp = 1;
    rsize = 0;
   }
  }
 }

 mps_ap_destroy(apamc);
 comment("Destroyed ap.");

 mps_pool_destroy(poolamc);
 comment("Destroyed pool.");

 mps_fmt_destroy(format);
 comment("Destroyed format.");

 mps_root_destroy(root1);
 mps_root_destroy(root);
 comment("Destroyed roots.");

 mps_thread_dereg(thread);
 comment("Deregistered thread.");

 mps_arena_destroy(arena);
 comment("Destroyed space.");
}

int main(void)
{
 void *m;
 stackpointer=&m; /* hack to get stack pointer */

 easy_tramp(test);
 report("result", "pass");
 return 0;
}