tests/host_statistics_rate_limiting.c

   1 #include <unistd.h>
   2 #include <stdint.h>
   3 #include <sys/time.h>
   4 #include <System/sys/codesign.h>
   5 #include <mach/mach_time.h>
   6 #include <mach/mach.h>
   7 #include <darwintest.h>
   8 #include <stdlib.h>
   9
  10 #if !defined(CS_OPS_CLEARPLATFORM)
  11 #define CS_OPS_CLEARPLATFORM 13
  12 #endif
  13
  14 #define WINDOW 1 /* seconds */
  15 #define MAX_ATTEMP_PER_SEC 10
  16 #define ITER 30
  17 #define RETRY 5
  18
  19 static int
  20 remove_platform_binary(void){
  21         int ret;
  22         uint32_t my_csflags;
  23
  24         T_QUIET; T_ASSERT_POSIX_ZERO(csops(getpid(), CS_OPS_STATUS, &my_csflags, sizeof(my_csflags)), NULL);
  25
  26         if (!(my_csflags & CS_PLATFORM_BINARY)) {
  27                 return 0;
  28         }
  29
  30         ret = csops(getpid(), CS_OPS_CLEARPLATFORM, NULL, 0);
  31         if (ret) {
  32                 switch (errno) {
  33                 case ENOTSUP:
  34                         T_LOG("clearing platform binary not supported, skipping test");
  35                         return -1;
  36                 default:
  37                         T_LOG("csops failed with flag CS_OPS_CLEARPLATFORM");
  38                         return -1;
  39                 }
  40         }
  41
  42         my_csflags = 0;
  43         T_QUIET; T_ASSERT_POSIX_ZERO(csops(getpid(), CS_OPS_STATUS, &my_csflags, sizeof(my_csflags)), NULL);
  44
  45         if (my_csflags & CS_PLATFORM_BINARY) {
  46                 T_LOG("platform binary flag still set");
  47                 return -1;
  48         }
  49
  50         return 0;
  51 }
  52
  53 struct all_host_info {
  54         vm_statistics64_data_t host_vm_info64_rev0;
  55         vm_statistics64_data_t host_vm_info64_rev1;
  56         vm_extmod_statistics_data_t host_extmod_info64;
  57         host_load_info_data_t host_load_info;
  58         vm_statistics_data_t host_vm_info_rev0;
  59         vm_statistics_data_t host_vm_info_rev1;
  60         vm_statistics_data_t host_vm_info_rev2;
  61         host_cpu_load_info_data_t host_cpu_load_info;
  62         task_power_info_v2_data_t host_expired_task_info;
  63         task_power_info_v2_data_t host_expired_task_info2;
  64 };
  65
  66 static void
  67 check_host_info(struct all_host_info* data, unsigned long iter, char lett){
  68         char* datap;
  69         unsigned long i,j;
  70
  71         /* check that for the shorter revisions no data is copied on the bytes of diff with the longer */
  72         for ( j = 0 ; j < iter; j++) {
  73                 datap = (char*) &data[j].host_vm_info64_rev0;
  74                 for ( i = (HOST_VM_INFO64_REV0_COUNT * sizeof(int)); i< (HOST_VM_INFO64_REV1_COUNT * sizeof(int)); i++) {
  75                         T_QUIET;T_ASSERT_EQ(datap[i], lett, "HOST_VM_INFO64_REV0 byte %lu iter %lu", i, j);
  76                 }
  77
  78                 datap = (char*) &data[j].host_vm_info_rev0;
  79                 for ( i = (HOST_VM_INFO_REV0_COUNT * sizeof(int)); i< (HOST_VM_INFO_REV2_COUNT * sizeof(int)); i++) {
  80                         T_QUIET;T_ASSERT_EQ(datap[i], lett, "HOST_VM_INFO_REV0 byte %lu iter %lu", i, j);
  81                 }
  82
  83                 datap = (char*) &data[j].host_vm_info_rev1;
  84                 for ( i = (HOST_VM_INFO_REV1_COUNT * sizeof(int)); i< (HOST_VM_INFO_REV2_COUNT * sizeof(int)); i++) {
  85                         T_QUIET;T_ASSERT_EQ(datap[i], lett, "HOST_VM_INFO_REV1 byte %lu iter %lu", i, j);
  86                 }
  87
  88                 datap = (char*) &data[j].host_expired_task_info;
  89                 for ( i = (TASK_POWER_INFO_COUNT * sizeof(int)); i< (TASK_POWER_INFO_V2_COUNT * sizeof(int)); i++) {
  90                         T_QUIET;T_ASSERT_EQ(datap[i], lett, "TASK_POWER_INFO_COUNT byte %lu iter %lu", i, j);
  91                 }
  92         }
  93         T_LOG("No data overflow");
  94
  95         datap = (char*) data;
  96
  97         /* check that after MAX_ATTEMP_PER_SEC data are all the same */
  98         for ( i = 0 ; i < sizeof(struct all_host_info) ; i++ )
  99                 for ( j = MAX_ATTEMP_PER_SEC - 1 ; j < iter - 1; j++) {
 100                         T_QUIET; T_ASSERT_EQ(datap[i+(j * sizeof(struct all_host_info))], datap[i+((j+1) * sizeof(struct all_host_info))], "all_host_info iter %lu does not match iter %lu", j, j+1);
 101                 }
 102
 103         T_LOG("Data was cached");
 104 }
 105
 106 static void
 107 get_host_info(struct all_host_info* data, host_t self, int iter){
 108         int i;
 109         unsigned int count;
 110         for (i = 0; i < iter; i++){
 111                 count = HOST_VM_INFO64_REV0_COUNT;
 112                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics64(self, HOST_VM_INFO64, (host_info64_t)&data[i].host_vm_info64_rev0, &count), NULL);
 113                 count = HOST_VM_INFO64_REV1_COUNT;
 114                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics64(self, HOST_VM_INFO64, (host_info64_t)&data[i].host_vm_info64_rev1, &count), NULL);
 115                 count = HOST_EXTMOD_INFO64_COUNT;
 116                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics64(self, HOST_EXTMOD_INFO64, (host_info64_t)&data[i].host_extmod_info64, &count), NULL);
 117                 count = HOST_LOAD_INFO_COUNT;
 118                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_LOAD_INFO, (host_info_t)&data[i].host_load_info, &count), NULL);
 119                 count = HOST_VM_INFO_REV0_COUNT;
 120                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_VM_INFO, (host_info_t)&data[i].host_vm_info_rev0, &count), NULL);
 121                 count = HOST_VM_INFO_REV1_COUNT;
 122                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_VM_INFO, (host_info_t)&data[i].host_vm_info_rev1, &count), NULL);
 123                 count = HOST_VM_INFO_REV2_COUNT;
 124                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_VM_INFO, (host_info_t)&data[i].host_vm_info_rev2, &count), NULL);
 125                 count = HOST_CPU_LOAD_INFO_COUNT;
 126                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_CPU_LOAD_INFO, (host_info_t)&data[i].host_cpu_load_info, &count), NULL);
 127                 count = TASK_POWER_INFO_COUNT;
 128                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_EXPIRED_TASK_INFO, (host_info_t)&data[i].host_expired_task_info, &count), NULL);
 129                 count = TASK_POWER_INFO_V2_COUNT;
 130                 T_QUIET;T_ASSERT_POSIX_ZERO(host_statistics(self, HOST_EXPIRED_TASK_INFO, (host_info_t)&data[i].host_expired_task_info2, &count), NULL);
 131
 132         }
 133
 134 }
 135
 136 T_DECL(test_host_statistics, "testing rate limit for host_statistics",
 137            T_META_CHECK_LEAKS(false), T_META_ALL_VALID_ARCHS(true))
 138 {
 139
 140         unsigned long long start, end, window;
 141         int retry = 0;
 142         host_t self;
 143         char lett = 'a';
 144         struct all_host_info* data;
 145         mach_timebase_info_data_t timebaseInfo = { 0, 0 };
 146
 147         if (remove_platform_binary())
 148                 T_SKIP("Failed to remove platform binary");
 149
 150         data = malloc(ITER * sizeof(struct all_host_info));
 151         T_QUIET;T_ASSERT_NE(data, NULL, "malloc");
 152
 153         /* check the size of the data structure against the bytes in COUNT*/
 154         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_vm_info64_rev0), HOST_VM_INFO64_COUNT * sizeof(int), "HOST_VM_INFO64_COUNT");
 155         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_extmod_info64), HOST_EXTMOD_INFO64_COUNT * sizeof(int), "HOST_EXTMOD_INFO64_COUNT");
 156         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_load_info), HOST_LOAD_INFO_COUNT * sizeof(int), "HOST_LOAD_INFO_COUNT");
 157         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_vm_info_rev0), HOST_VM_INFO_COUNT * sizeof(int), "HOST_VM_INFO_COUNT");
 158         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_cpu_load_info), HOST_CPU_LOAD_INFO_COUNT * sizeof(int), "HOST_CPU_LOAD_INFO_COUNT");
 159         T_QUIET;T_ASSERT_EQ(sizeof(data[0].host_expired_task_info2), TASK_POWER_INFO_V2_COUNT * sizeof(int), "TASK_POWER_INFO_V2_COUNT");
 160
 161         /* check that the latest revision is the COUNT */
 162         T_QUIET;T_ASSERT_EQ(HOST_VM_INFO64_REV1_COUNT, HOST_VM_INFO64_COUNT, "HOST_VM_INFO64_REV1_COUNT");
 163         T_QUIET;T_ASSERT_EQ(HOST_VM_INFO_REV2_COUNT, HOST_VM_INFO_COUNT, "HOST_VM_INFO_REV2_COUNT");
 164
 165         /* check that the previous revision are smaller than the latest */
 166         T_QUIET;T_ASSERT_LE(HOST_VM_INFO64_REV0_COUNT, HOST_VM_INFO64_REV1_COUNT, "HOST_VM_INFO64_REV0");
 167         T_QUIET;T_ASSERT_LE(HOST_VM_INFO_REV0_COUNT, HOST_VM_INFO_REV2_COUNT, "HOST_VM_INFO_REV0_COUNT");
 168         T_QUIET;T_ASSERT_LE(HOST_VM_INFO_REV1_COUNT, HOST_VM_INFO_REV2_COUNT, "HOST_VM_INFO_REV1_COUNT");
 169         T_QUIET;T_ASSERT_LE(TASK_POWER_INFO_COUNT,TASK_POWER_INFO_V2_COUNT, "TASK_POWER_INFO_COUNT");
 170
 171         memset(data, lett, ITER * sizeof(struct all_host_info));
 172         self = mach_host_self();
 173
 174         T_QUIET;T_ASSERT_EQ(mach_timebase_info(&timebaseInfo), KERN_SUCCESS, NULL);
 175         window = (WINDOW * NSEC_PER_SEC * timebaseInfo.denom) / timebaseInfo.numer;
 176         retry = 0;
 177
 178         /* try to get ITER copies of host_info within window time, in such a way we should hit for sure a cached copy */
 179         do {
 180                 start = mach_continuous_time();
 181                 get_host_info(data, self, ITER);
 182                 end = mach_continuous_time();
 183                 retry++;
 184         } while( (end - start > window) && retry <= RETRY);
 185
 186         if (retry <= RETRY)
 187                 check_host_info(data, ITER, lett);
 188         else
 189                 T_SKIP("Failed to find window for test");
 190 }
 191