#include <errno.h>
#include <unistd.h>
+#if defined(STACK_SIZE) && (STACK_SIZE < 128*1024)
+ #define CHUNK_SIZE 4096
+#else
+ #define CHUNK_SIZE 16384
+#endif
+
unsigned long ossAlignX(unsigned long i, unsigned long X)
{
return ((i + (X - 1)) & ~(unsigned long) (X - 1));
struct stuff
{
- char c0[4096-sizeof(struct XXX)];
+ char c0[CHUNK_SIZE-sizeof(struct XXX)];
struct XXX o;
- char c1[4096*2-sizeof(struct SQLU_DATAPART_0)];
+ char c1[CHUNK_SIZE*2-sizeof(struct SQLU_DATAPART_0)];
struct SQLU_DATAPART_0 dp;
- char c2[4096*2-sizeof(struct SQLU_DICT_INFO_0)];
+ char c2[CHUNK_SIZE*2-sizeof(struct SQLU_DICT_INFO_0)];
struct SQLU_DICT_INFO_0 di;
- char c3[4096];
+ char c3[CHUNK_SIZE];
};
- char buf[sizeof(struct stuff)+4096];
- struct stuff *u = (struct stuff *)ossAlignX((unsigned long)&buf[0], 4096);
+ char buf[sizeof(struct stuff)+CHUNK_SIZE];
+ struct stuff *u
+ = (struct stuff *)ossAlignX((unsigned long)&buf[0], CHUNK_SIZE);
- /* This test assumes system memory page size of 4096 bytes or less. */
- if (sysconf(_SC_PAGESIZE) > 4096)
+ /* This test assumes system memory page
+ size of CHUNK_SIZE bytes or less. */
+ if (sysconf(_SC_PAGESIZE) > CHUNK_SIZE)
return 0;
memset(u, 1, sizeof(struct stuff));
u->c2[0] = '\xBB';
u->c3[0] = '\xCC';
- rc = mprotect(u->c1, 4096, PROT_NONE);
+ rc = mprotect(u->c1, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c1: %d: %d(%s)\n", rc, errno, strerror(errno));
- rc = mprotect(u->c2, 4096, PROT_NONE);
+ rc = mprotect(u->c2, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c2: %d: %d(%s)\n", rc, errno, strerror(errno));
- rc = mprotect(u->c3, 4096, PROT_NONE);
+ rc = mprotect(u->c3, CHUNK_SIZE, PROT_NONE);
if (rc == -1)
printf("mprotect:c3: %d: %d(%s)\n", rc, errno, strerror(errno));
u->dp.pDictRidderInfo = &u->di;
Initialize(&u->o, 0);
- mprotect(u->c1, 4096, PROT_READ|PROT_WRITE);
- mprotect(u->c2, 4096, PROT_READ|PROT_WRITE);
- mprotect(u->c3, 4096, PROT_READ|PROT_WRITE);
+ mprotect(u->c1, CHUNK_SIZE, PROT_READ|PROT_WRITE);
+ mprotect(u->c2, CHUNK_SIZE, PROT_READ|PROT_WRITE);
+ mprotect(u->c3, CHUNK_SIZE, PROT_READ|PROT_WRITE);
return 0;
}