Clear f on error get_next_file_rr()
[fio.git] / memory.c
index 9df2321..899a9e5 100644 (file)
--- a/memory.c
+++ b/memory.c
@@ -1,18 +1,21 @@
 /*
  * Memory helpers
  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 #include <unistd.h>
 #include <sys/shm.h>
 #include <sys/mman.h>
 
 #include "fio.h"
-#include "os.h"
 
 static void *pinned_mem;
 
 void fio_unpin_memory(void)
 {
        if (pinned_mem) {
+               dprint(FD_MEM, "unpinning %llu bytes\n", mlock_size);
                if (munlock(pinned_mem, mlock_size) < 0)
                        perror("munlock");
                munmap(pinned_mem, mlock_size);
@@ -27,6 +30,8 @@ int fio_pin_memory(void)
        if (!mlock_size)
                return 0;
 
+       dprint(FD_MEM, "pinning %llu bytes\n", mlock_size);
+
        /*
         * Don't allow mlock of more than real_mem-128MB
         */
@@ -34,11 +39,13 @@ int fio_pin_memory(void)
        if (phys_mem) {
                if ((mlock_size + 128 * 1024 * 1024) > phys_mem) {
                        mlock_size = phys_mem - 128 * 1024 * 1024;
-                       log_info("fio: limiting mlocked memory to %lluMiB\n", mlock_size >> 20);
+                       log_info("fio: limiting mlocked memory to %lluMiB\n",
+                                                       mlock_size >> 20);
                }
        }
 
-       pinned_mem = mmap(NULL, mlock_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | OS_MAP_ANON, 0, 0);
+       pinned_mem = mmap(NULL, mlock_size, PROT_READ | PROT_WRITE,
+                               MAP_PRIVATE | OS_MAP_ANON, -1, 0);
        if (pinned_mem == MAP_FAILED) {
                perror("malloc locked mem");
                pinned_mem = NULL;
@@ -54,77 +61,145 @@ int fio_pin_memory(void)
        return 0;
 }
 
-/*
- * Setup the buffer area we need for io.
- */
-int allocate_io_mem(struct thread_data *td)
+static int alloc_mem_shm(struct thread_data *td)
 {
-       if (td->mem_type == MEM_MALLOC)
-               td->orig_buffer = malloc(td->orig_buffer_size);
-       else if (td->mem_type == MEM_SHM || td->mem_type == MEM_SHMHUGE) {
-               int flags = IPC_CREAT | SHM_R | SHM_W;
-
-               if (td->mem_type == MEM_SHMHUGE)
-                       flags |= SHM_HUGETLB;
-
-               td->shm_id = shmget(IPC_PRIVATE, td->orig_buffer_size, flags);
-               if (td->shm_id < 0) {
-                       td_verror(td, errno, "shmget");
-                       perror("shmget");
-                       return 1;
+       int flags = IPC_CREAT | SHM_R | SHM_W;
+
+       if (td->o.mem_type == MEM_SHMHUGE)
+               flags |= SHM_HUGETLB;
+
+       td->shm_id = shmget(IPC_PRIVATE, td->orig_buffer_size, flags);
+       dprint(FD_MEM, "shmget %zu, %d\n", td->orig_buffer_size, td->shm_id);
+       if (td->shm_id < 0) {
+               td_verror(td, errno, "shmget");
+               if (geteuid() != 0 && errno == ENOMEM)
+                       log_err("fio: you may need to run this job as root\n");
+               if (td->o.mem_type == MEM_SHMHUGE) {
+                       if (errno == EINVAL) {
+                               log_err("fio: check that you have free huge"
+                                       " pages and that hugepage-size is"
+                                       " correct.\n");
+                       } else if (errno == ENOSYS) {
+                               log_err("fio: your system does not appear to"
+                                       " support huge pages.\n");
+                       } else if (errno == ENOMEM) {
+                               log_err("fio: no huge pages available, do you"
+                                       " need to alocate some? See HOWTO.\n");
+                       }
                }
 
-               td->orig_buffer = shmat(td->shm_id, NULL, 0);
-               if (td->orig_buffer == (void *) -1) {
-                       td_verror(td, errno, "shmat");
-                       perror("shmat");
-                       td->orig_buffer = NULL;
-                       return 1;
-               }
-       } else if (td->mem_type == MEM_MMAP || td->mem_type == MEM_MMAPHUGE) {
-               int flags = MAP_PRIVATE;
+               return 1;
+       }
+
+       td->orig_buffer = shmat(td->shm_id, NULL, 0);
+       dprint(FD_MEM, "shmat %d, %p\n", td->shm_id, td->orig_buffer);
+       if (td->orig_buffer == (void *) -1) {
+               td_verror(td, errno, "shmat");
+               td->orig_buffer = NULL;
+               return 1;
+       }
 
-               td->mmapfd = 0;
+       return 0;
+}
 
-               if (td->mmapfile) {
-                       td->mmapfd = open(td->mmapfile, O_RDWR|O_CREAT, 0644);
+static int alloc_mem_mmap(struct thread_data *td)
+{
+       int flags = MAP_PRIVATE;
 
-                       if (td->mmapfd < 0) {
-                               td_verror(td, errno, "open");
-                               perror("open mmap file");
-                               td->orig_buffer = NULL;
-                               return 1;
-                       }
-               } else
-                       flags |= OS_MAP_ANON;
+       td->mmapfd = 1;
 
-               td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, flags, td->mmapfd, 0);
-               if (td->orig_buffer == MAP_FAILED) {
-                       td_verror(td, errno, "mmap");
-                       perror("mmap");
+       if (td->mmapfile) {
+               td->mmapfd = open(td->mmapfile, O_RDWR|O_CREAT, 0644);
+
+               if (td->mmapfd < 0) {
+                       td_verror(td, errno, "open mmap file");
+                       td->orig_buffer = NULL;
+                       return 1;
+               }
+               if (ftruncate(td->mmapfd, td->orig_buffer_size) < 0) {
+                       td_verror(td, errno, "truncate mmap file");
                        td->orig_buffer = NULL;
-                       if (td->mmapfd) {
-                               close(td->mmapfd);
-                               unlink(td->mmapfile);
-                       }
-                               
                        return 1;
                }
+       } else
+               flags |= OS_MAP_ANON;
+
+       td->orig_buffer = mmap(NULL, td->orig_buffer_size,
+                               PROT_READ | PROT_WRITE, flags, td->mmapfd, 0);
+       dprint(FD_MEM, "mmap %zu/%d %p\n", td->orig_buffer_size, td->mmapfd,
+                                                       td->orig_buffer);
+       if (td->orig_buffer == MAP_FAILED) {
+               td_verror(td, errno, "mmap");
+               td->orig_buffer = NULL;
+               if (td->mmapfd) {
+                       close(td->mmapfd);
+                       unlink(td->mmapfile);
+               }
+
+               return 1;
        }
 
        return 0;
 }
 
+static int alloc_mem_malloc(struct thread_data *td)
+{
+       unsigned int bsize = td->orig_buffer_size;
+
+       if (td->o.odirect)
+               bsize += page_mask;
+
+       td->orig_buffer = malloc(bsize);
+       dprint(FD_MEM, "malloc %u %p\n", bsize, td->orig_buffer);
+       if (td->orig_buffer)
+               return 0;
+
+       return 1;
+}
+
+/*
+ * Setup the buffer area we need for io.
+ */
+int allocate_io_mem(struct thread_data *td)
+{
+       int ret = 0;
+
+       if (td->io_ops->flags & FIO_NOIO)
+               return 0;
+
+       if (td->o.mem_type == MEM_MALLOC)
+               ret = alloc_mem_malloc(td);
+       else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE)
+               ret = alloc_mem_shm(td);
+       else if (td->o.mem_type == MEM_MMAP || td->o.mem_type == MEM_MMAPHUGE)
+               ret = alloc_mem_mmap(td);
+       else {
+               log_err("fio: bad mem type: %d\n", td->o.mem_type);
+               ret = 1;
+       }
+
+       if (ret)
+               td_verror(td, ENOMEM, "iomem allocation");
+
+       return ret;
+}
+
 void free_io_mem(struct thread_data *td)
 {
-       if (td->mem_type == MEM_MALLOC)
+       if (td->o.mem_type == MEM_MALLOC) {
+               dprint(FD_MEM, "free mem %p\n", td->orig_buffer);
                free(td->orig_buffer);
-       else if (td->mem_type == MEM_SHM || td->mem_type == MEM_SHMHUGE) {
+       } else if (td->o.mem_type == MEM_SHM || td->o.mem_type == MEM_SHMHUGE) {
                struct shmid_ds sbuf;
 
+               dprint(FD_MEM, "shmdt/ctl %d %p\n", td->shm_id,
+                                                       td->orig_buffer);
                shmdt(td->orig_buffer);
                shmctl(td->shm_id, IPC_RMID, &sbuf);
-       } else if (td->mem_type == MEM_MMAP || td->mem_type == MEM_MMAPHUGE) {
+       } else if (td->o.mem_type == MEM_MMAP ||
+                  td->o.mem_type == MEM_MMAPHUGE) {
+               dprint(FD_MEM, "munmap %zu %p\n", td->orig_buffer_size,
+                                                       td->orig_buffer);
                munmap(td->orig_buffer, td->orig_buffer_size);
                if (td->mmapfile) {
                        close(td->mmapfd);
@@ -132,7 +207,7 @@ void free_io_mem(struct thread_data *td)
                        free(td->mmapfile);
                }
        } else
-               log_err("Bad memory type %u\n", td->mem_type);
+               log_err("Bad memory type %u\n", td->o.mem_type);
 
        td->orig_buffer = NULL;
 }