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// RUN: %libomptarget-compile-generic -fopenmp-extensions
// RUN: %libomptarget-run-generic | %fcheck-generic -strict-whitespace
#include <omp.h>
#include <stdio.h>
#pragma omp begin declare target
#define MAX_NAME_SIZE 100
char N1[MAX_NAME_SIZE], N2[MAX_NAME_SIZE];
int V1, V2;
void copy_name(char *dst, char *src) {
int i;
for (i = 0; i < MAX_NAME_SIZE - 1 && src[i]; ++i)
dst[i] = src[i];
dst[i] = 0;
}
#pragma omp end declare target
#define CHECK_PRESENCE(Var1, Var2, Var3) \
printf(" presence of %s, %s, %s: %d, %d, %d\n", #Var1, #Var2, #Var3, \
omp_target_is_present(&(Var1), omp_get_default_device()), \
omp_target_is_present(&(Var2), omp_get_default_device()), \
omp_target_is_present(&(Var3), omp_get_default_device()))
#define CHECK_VALUES_HELPER(N1, N2, Var1, Var2) \
printf(" values of %s, %s: %d, %d\n", N1, N2, (Var1), (Var2))
#define CHECK_VALUES_DELAYED(Var1, Var2) \
copy_name(N1, #Var1); \
copy_name(N2, #Var2); \
V1 = (Var1); \
V2 = (Var2);
#define CHECK_DELAYED_VALUES() \
_Pragma("omp target update from(N1, N2, V1, V2)") \
CHECK_VALUES_HELPER(N1, N2, V1, V2)
#define CHECK_VALUES(Var1, Var2) \
CHECK_VALUES_HELPER(#Var1, #Var2, (Var1), (Var2))
int main() {
struct S {
int i;
int j;
} s;
// CHECK: presence of s, s.i, s.j: 0, 0, 0
CHECK_PRESENCE(s, s.i, s.j);
// =======================================================================
// Check that ompx_hold keeps entire struct present.
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
printf("check: ompx_hold only on first member\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(tofrom : s) map(ompx_hold, tofrom : s.i) \
map(tofrom : s.j)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(tofrom : s)
{
s.i = 21;
s.j = 31;
}
#pragma omp target exit data map(delete : s, s.i)
// ompx_hold on s.i applies to all of s.
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
printf("check: ompx_hold only on last member\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(tofrom : s) map(tofrom : s.i) \
map(ompx_hold, tofrom : s.j)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(tofrom : s)
{
s.i = 21;
s.j = 31;
}
#pragma omp target exit data map(delete : s, s.i)
// ompx_hold on s.j applies to all of s.
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
printf("check: ompx_hold only on struct\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(ompx_hold, tofrom : s) map(tofrom : s.i) \
map(tofrom : s.j)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(tofrom : s)
{
s.i = 21;
s.j = 31;
}
#pragma omp target exit data map(delete : s, s.i)
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
// =======================================================================
// Check that transfer to/from host checks reference count correctly.
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
printf("check: parent DynRefCount=1 is not sufficient for transfer\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(ompx_hold, tofrom : s)
#pragma omp target data map(ompx_hold, tofrom : s)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(from : s.i, s.j)
{
s.i = 21;
s.j = 31;
} // No transfer here even though parent's DynRefCount=1.
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
#pragma omp target map(to : s.i, s.j)
{ // No transfer here even though parent's DynRefCount=1.
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_VALUES_DELAYED(s.i, s.j);
}
CHECK_DELAYED_VALUES();
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
printf("check: parent HoldRefCount=1 is not sufficient for transfer\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(tofrom : s)
#pragma omp target data map(tofrom : s)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(ompx_hold, from : s.i, s.j)
{
s.i = 21;
s.j = 31;
} // No transfer here even though parent's HoldRefCount=1.
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
#pragma omp target map(ompx_hold, to : s.i, s.j)
{ // No transfer here even though parent's HoldRefCount=1.
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_VALUES_DELAYED(s.i, s.j);
}
CHECK_DELAYED_VALUES();
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
// -----------------------------------------------------------------------
// CHECK-LABEL: check:{{.*}}
//
// At the beginning of a region, if the parent's TotalRefCount=1, then the
// transfer should happen.
//
// At the end of a region, it also must be true that the reference count being
// decremented is the reference count that is 1.
printf("check: parent TotalRefCount=1 is not sufficient for transfer\n");
s.i = 20;
s.j = 30;
#pragma omp target data map(ompx_hold, tofrom : s)
{
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
CHECK_PRESENCE(s, s.i, s.j);
#pragma omp target map(ompx_hold, tofrom : s.i, s.j)
{
s.i = 21;
s.j = 31;
}
#pragma omp target exit data map(from : s.i, s.j)
// No transfer here even though parent's TotalRefCount=1.
// CHECK-NEXT: presence of s, s.i, s.j: 1, 1, 1
// CHECK-NEXT: values of s.i, s.j: 20, 30
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
}
// CHECK-NEXT: presence of s, s.i, s.j: 0, 0, 0
// CHECK-NEXT: values of s.i, s.j: 21, 31
CHECK_PRESENCE(s, s.i, s.j);
CHECK_VALUES(s.i, s.j);
return 0;
}
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