--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gpu/ptx/vm/gpu_ptx.cpp	Thu Jul 25 22:15:30 2013 -0400
@@ -0,0 +1,316 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "runtime/gpu.hpp"
+#include "utilities/globalDefinitions.hpp"
+#include "utilities/ostream.hpp"
+
+void * gpu::Ptx::_device_context;
+
+gpu::Ptx::cuda_cu_init_func_t gpu::Ptx::_cuda_cu_init;
+gpu::Ptx::cuda_cu_ctx_create_func_t gpu::Ptx::_cuda_cu_ctx_create;
+gpu::Ptx::cuda_cu_ctx_detach_func_t gpu::Ptx::_cuda_cu_ctx_detach;
+gpu::Ptx::cuda_cu_ctx_synchronize_func_t gpu::Ptx::_cuda_cu_ctx_synchronize;
+gpu::Ptx::cuda_cu_device_get_count_func_t gpu::Ptx::_cuda_cu_device_get_count;
+gpu::Ptx::cuda_cu_device_get_name_func_t gpu::Ptx::_cuda_cu_device_get_name;
+gpu::Ptx::cuda_cu_device_get_func_t gpu::Ptx::_cuda_cu_device_get;
+gpu::Ptx::cuda_cu_device_compute_capability_func_t gpu::Ptx::_cuda_cu_device_compute_capability;
+gpu::Ptx::cuda_cu_device_get_attribute_func_t gpu::Ptx::_cuda_cu_device_get_attribute;
+gpu::Ptx::cuda_cu_launch_kernel_func_t gpu::Ptx::_cuda_cu_launch_kernel;
+gpu::Ptx::cuda_cu_module_get_function_func_t gpu::Ptx::_cuda_cu_module_get_function;
+gpu::Ptx::cuda_cu_module_load_data_ex_func_t gpu::Ptx::_cuda_cu_module_load_data_ex;
+
+void gpu::probe_linkage() {
+#if defined(__APPLE__) || defined(LINUX)
+  set_gpu_linkage(gpu::Ptx::probe_linkage());
+#else
+  set_gpu_linkage(false);
+#endif
+}
+
+void gpu::initialize_gpu() {
+  if (gpu::has_gpu_linkage()) {
+    set_initialized(gpu::Ptx::initialize_gpu());
+  }
+}
+
+void * gpu::generate_kernel(unsigned char *code, int code_len, const char *name) {
+  if (gpu::has_gpu_linkage()) {
+    return (gpu::Ptx::generate_kernel(code, code_len, name));
+  } else {
+    return NULL;
+  }
+}
+
+bool gpu::execute_kernel(address kernel) {
+  if (gpu::has_gpu_linkage()) {
+    return (gpu::Ptx::execute_kernel(kernel));
+  } else {
+    return false;
+  }
+}
+
+bool gpu::Ptx::initialize_gpu() {
+
+  /* Initialize CUDA driver API */
+  int status = _cuda_cu_init(0);
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("Failed to initialize CUDA device");
+    return false;
+  }
+ 
+  if (TraceGPUInteraction) {
+    tty->print_cr("CUDA driver initialization: Success");
+  }
+
+  /* Get the number of compute-capable device count */
+  int device_count = 0;
+  status = _cuda_cu_device_get_count(&device_count);
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get compute-capable device count");
+    return false;
+  }
+
+  if (device_count == 0) {
+    tty->print_cr("[CUDA] Found no device supporting CUDA");
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Number of compute-capable devices found: %d", device_count);
+  }
+  
+  /* Get the handle to the first compute device */
+  int device_id = 0;
+  /* Compute-capable device handle */
+  int cu_device = 0;
+  status = _cuda_cu_device_get(&cu_device, device_id);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get handle of first compute-capable device i.e., the one at ordinal: %d", device_id);
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Got the handle of first compute-device");
+  }
+
+  /* Get device attributes */
+  int minor, major;
+  status = _cuda_cu_device_get_attribute(&minor, GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR, cu_device);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get minor attribute of device: %d", cu_device);
+    return false;
+  }
+
+  status = _cuda_cu_device_get_attribute(&major, GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR, cu_device);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get major attribute of device: %d", cu_device);
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Compatibility version of device %d: %d.%d", cu_device, major, minor);
+  }
+
+  /* Get device name */
+  char device_name[256];
+  status = _cuda_cu_device_get_name(device_name, 256, cu_device);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get name of device: %d", cu_device);
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Using %s", device_name);
+  }
+
+  /* Create CUDA context */
+  status = _cuda_cu_ctx_create(&_device_context, 0, cu_device);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to create CUDA context for device: %d", cu_device);
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Success: Created context for device: %d", cu_device);
+  }
+
+  return true;
+}
+
+void *gpu::Ptx::generate_kernel(unsigned char *code, int code_len, const char *name) {
+
+  struct CUmod_st * cu_module;
+  // Use three JIT compiler options
+  const unsigned int jit_num_options = 3;
+  int *jit_options = NEW_C_HEAP_ARRAY(int, jit_num_options, mtCompiler);
+  void **jit_option_values = NEW_C_HEAP_ARRAY(void *, jit_num_options, mtCompiler);
+
+  // Set up PTX JIT compiler options
+  // 1. set size of compilation log buffer
+  int jit_log_buffer_size = 1024;
+  jit_options[0] = GRAAL_CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES;
+  jit_option_values[0] = (void *)(size_t)jit_log_buffer_size;
+
+  // 2. set pointer to compilation log buffer
+  char *jit_log_buffer = NEW_C_HEAP_ARRAY(char, jit_log_buffer_size, mtCompiler);
+  jit_options[1] = GRAAL_CU_JIT_INFO_LOG_BUFFER;
+  jit_option_values[1] = jit_log_buffer;
+
+  // 3. set pointer to set the Maximum # of registers (32) for the kernel
+  int jit_register_count = 32;
+  jit_options[2] = GRAAL_CU_JIT_MAX_REGISTERS;
+  jit_option_values[2] = (void *)(size_t)jit_register_count;
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] PTX Kernel\n%s", code);
+    tty->print_cr("[CUDA] Function name : %s", name);
+
+  }
+
+  /* Load module's data with compiler options */
+  int status = _cuda_cu_module_load_data_ex(&cu_module, code, jit_num_options,
+                                            jit_options, (void **)jit_option_values);
+  if (status != GRAAL_CUDA_SUCCESS) {
+    if (status == GRAAL_CUDA_ERROR_NO_BINARY_FOR_GPU) {
+      tty->print_cr("[CUDA] Check for malformed PTX kernel or incorrect PTX compilation options");
+    }
+    tty->print_cr("[CUDA] *** Error (%d) Failed to load module data with online compiler options for method %s", 
+                  status, name);
+    return NULL;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Loaded data for PTX Kernel");
+  }
+
+  struct CUfunc_st * cu_function;
+
+  status = _cuda_cu_module_get_function(&cu_function, cu_module, name);
+
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to get function %s", name);
+    return NULL;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Got function handle for %s", name);
+  }
+  return cu_function;
+}
+
+bool gpu::Ptx::execute_kernel(address kernel) {
+  // grid dimensionality
+  unsigned int gridX = 1;
+  unsigned int gridY = 1;
+  unsigned int gridZ = 1;
+
+  // thread dimensionality
+  unsigned int blockX = 1;
+  unsigned int blockY = 1;
+  unsigned int blockZ = 1;
+  
+  int *cu_function = (int *)kernel;
+
+  if (kernel == NULL) {
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] launching kernel");
+  }
+  int status = _cuda_cu_launch_kernel(cu_function,
+                                      gridX, gridY, gridZ,
+                                      blockX, blockY, blockZ,
+                                      0, NULL, NULL, NULL);
+  if (status != GRAAL_CUDA_SUCCESS) {
+    tty->print_cr("[CUDA] Failed to launch kernel");
+    return false;
+  }
+
+  if (TraceGPUInteraction) {
+    tty->print_cr("[CUDA] Success: Kernel Launch");
+  }
+  return status == 0;  // GRAAL_CUDA_SUCCESS
+}
+
+#if defined(LINUX)
+static const char cuda_library_name[] = "libcuda.so";
+#elif defined(__APPLE__)
+static char const cuda_library_name[] = "/usr/local/cuda/lib/libcuda.dylib";
+#else
+static char const cuda_library_name[] = "";
+#endif
+
+bool gpu::Ptx::probe_linkage() {
+  if (cuda_library_name != NULL) {
+    void *handle = dlopen(cuda_library_name, RTLD_LAZY);
+    if (handle != NULL) {
+      _cuda_cu_init =
+        CAST_TO_FN_PTR(cuda_cu_init_func_t, dlsym(handle, "cuInit"));
+      _cuda_cu_ctx_create =
+        CAST_TO_FN_PTR(cuda_cu_ctx_create_func_t, dlsym(handle, "cuCtxCreate"));
+      _cuda_cu_ctx_detach =
+        CAST_TO_FN_PTR(cuda_cu_ctx_detach_func_t, dlsym(handle, "cuCtxDetach"));
+      _cuda_cu_ctx_synchronize =
+        CAST_TO_FN_PTR(cuda_cu_ctx_synchronize_func_t, dlsym(handle, "cuCtxSynchronize"));
+      _cuda_cu_device_get_count =
+        CAST_TO_FN_PTR(cuda_cu_device_get_count_func_t, dlsym(handle, "cuDeviceGetCount"));
+      _cuda_cu_device_get_name =
+        CAST_TO_FN_PTR(cuda_cu_device_get_name_func_t, dlsym(handle, "cuDeviceGetName"));
+      _cuda_cu_device_get =
+        CAST_TO_FN_PTR(cuda_cu_device_get_func_t, dlsym(handle, "cuDeviceGet"));
+      _cuda_cu_device_compute_capability =
+        CAST_TO_FN_PTR(cuda_cu_device_compute_capability_func_t, dlsym(handle, "cuDeviceComputeCapability"));
+      _cuda_cu_device_get_attribute =
+        CAST_TO_FN_PTR(cuda_cu_device_get_attribute_func_t, dlsym(handle, "cuDeviceGetAttribute"));
+      _cuda_cu_module_get_function =
+        CAST_TO_FN_PTR(cuda_cu_module_get_function_func_t, dlsym(handle, "cuModuleGetFunction"));
+      _cuda_cu_module_load_data_ex =
+        CAST_TO_FN_PTR(cuda_cu_module_load_data_ex_func_t, dlsym(handle, "cuModuleLoadDataEx"));
+      _cuda_cu_launch_kernel =
+        CAST_TO_FN_PTR(cuda_cu_launch_kernel_func_t, dlsym(handle, "cuLaunchKernel"));
+      if (TraceGPUInteraction) {
+        tty->print_cr("[CUDA] Success: library linkage");
+      }
+      return true;
+    } else {
+      // Unable to dlopen libcuda
+      tty->print_cr("Use LD_LIBRARY_PATH (or other means) to specify installed location of CUDA library");
+      return false;
+    }
+  } else {
+    tty->print_cr("Unsupported CUDA platform");
+    return false;
+  }
+  tty->print_cr("Failed to find CUDA linkage");
+  return false;
+}
+